Business Pivots, Entrepreneurship, Mindset, Online Business

Why I Really Quit My 9-5 After Corporate Burnout

September 8, 2026
By itssophiebiggerstaff.com

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Why Do High Achievers Stay in a 9 to 5 Jobs Even When Corporate Burnout Is Breaking Them?

I want to tell you something that nobody in the corporate world ever told me: most people who are experiencing symptoms of burnout don’t leave. They stay. They stay for years longer than they should, not because they can’t afford to leave, not because they don’t have options, and not because they don’t know on some level that something is deeply wrong. They stay because their entire identity is wrapped up in what they do. Their job title is not just a job title – it is who they are. And that was me, for a very long time.

I started my career at 16. I never went to university. I went straight from school into the fashion industry and spent the next 12 years working my way up until I was managing a £380 million business and buying for some of the world’s most recognisable brands – Ralph Lauren, Burberry, Kate Spade, Diesel. From the outside, it looked extraordinary. People compared me to Rachel Green from Friends and Lauren Conrad. It looked like everything a high achiever could want. But underneath that, I was experiencing corporate burnout that was quietly dismantling me, piece by piece. I stayed in a 9 to 5 job I had stopped loving for four years before I finally walked away. And the thing that kept me there was not money, and it was not fear of the unknown – it was the terrifying question: who am I if I am not this?

If you are sitting with burnout at work right now, or you have been quietly telling yourself for years that this career is not right for you anymore, I want you to read every word of this. Because what I am about to share changed my life, and it might change yours too. And if you are already thinking about how to start an online business as your way out, the Freedom Founder Playbook is where I go deeper into exactly how I made that transition – you can download it here.

Corporate Burnout Often Starts Way Before You See The Symptoms of Burnout

When I was 23 I was offered a job in Italy – full relocation package, an international expat office, language lessons, the whole thing. I flew over there thinking I had been promised the world. The reality was almost comically different. The English-speaking office did not exist. I was sitting through meetings entirely in Italian, not understanding a word. The structure I had been promised was not there. And my boss – who was having an affair with her own boss – simply did not like me, and made sure I knew it.

This was my first real taste of burnout at work. Not the exhaustion kind – the kind where you are being systematically worn down by an environment designed to make you feel small. I experienced workplace bullying, and because my boss’s boyfriend held authority above us both, I had nobody to turn to. Every time I raised an issue, I was ignored. I eventually decided to leave despite a two-year contract and a relocation repayment clause that – thanks to a translation error between Italian and English in the contract – meant I would be paying back more than I had ever actually received. Lawyers got involved. The company ignored every email. They withheld my pay for the final three months and took my pension. It was chaos. But it taught me something I carried for years: sometimes you have to fight for yourself because nobody else is going to. And that lesson became foundational to everything I built when I left my 9 to 5 job behind for good.

This is one of the quieter symptoms of burnout that does not get talked about enough – the erosion of your sense of safety and trust at work. It does not always announce itself dramatically. Sometimes it just looks like dreading Monday on Sunday morning, lying awake going over conversations in your head, and slowly losing your grip on the version of yourself you used to be. If any of that sounds familiar, this is your sign to pay attention.

What Burnout at Work Actually Looks and Feels Like From the Inside

When I finally hit what I now recognise as the peak of my corporate burnout, it showed up like this:

Extreme anxiety every single morning that I could not switch off, no matter what I tried
Panic attacks in the toilets at work that I was managing in secret because I did not want anyone to know I was struggling
Lying awake at night, cycling through work conversations, unable to quiet my brain
Dreading Monday from the moment I woke up on Sunday – not just reluctance, but a full-body dread
Losing energy for the people and things I loved outside of work because the job was taking everything I had
Losing myself entirely – not recognising the person I was becoming and not being able to find the ambitious, full-of-belief 16-year-old I had been when I walked into this career

The clearest moment came when I went to my manager – at a company I had genuinely loved working for, that I had pestered the hiring manager for six months to even get a role at – and I told her I was in therapy, I was doing the work, but I was not okay. I asked for a small amount of grace: the ability to attend in-person therapy sessions during work hours. She looked at me and said, “Everyone’s got problems, Sophie. You’re just going to have to get on with it.”

That was not the moment I quit. But it was the moment I knew I could not stay. Because in that instant I saw with complete clarity that this company did not see me as a human being. I was a function. I was an output. And the moment I was not producing at full capacity, I became a problem to manage rather than a person to support. These are the symptoms of burnout that nobody warns you about – not the exhaustion, but the realisation of your own invisibility. Recognising these signs of corporate burnout is not weakness. It is information.

How I Finally Decided to Leave My 9 to 5 Job and Start an Online Business

After those experiences, I still did not immediately make the leap. Instead, I did what so many high achievers experiencing burnout at work do – I moved to another job, telling myself this one would be different.

My last role in the fashion industry started well. My boss championed me from day one, told me I was going to be the next CEO, and promoted me over the woman I was covering for maternity leave. When she came back and my contract ended, they offered me a permanent role. I turned it down. I was too anxious, too burned out, and too desperate to finally figure out who I was outside of this industry.

My boss – who had been my biggest advocate for a year – took it so personally that he stopped speaking to me for the last three weeks of my contract. He would walk past my desk, speak to the person sitting next to me, and pass messages through them rather than look at me directly. It was genuinely wild. It was also the final confirmation that I was doing the right thing.

Here is what I want you to take from my experience of corporate burnout and the decision to start an online business:

Staying in the wrong environment longer does not make leaving easier – it just costs you more of yourself
Moving from one 9 to 5 job to another while hoping it will feel different is a cycle, not a strategy
The symptoms of burnout do not disappear with a new job title or a pay rise – they follow you until you address the root
You do not need a perfect plan or perfect timing to start – you need to begin, and you can do that alongside your current role
The skills you have built in your corporate career are more valuable than you realise – I was building five-year plans for a £380 million business, and I took that exact thinking into starting my online business

I left my corporate career in 2020 with £15,000 in savings and a plan to travel the world. The pandemic arrived and took that plan with it. Looking back, it was accidentally the most brilliant thing that could have happened – because it forced me to stop running and actually build the thing I had been dreaming about for three years. No roadmap. No startup experience. Just 12 years of skills and the decision to finally use them for myself. The Freedom Founder Playbook is where I document that entire process – the good, the messy, and the moments where I had absolutely no idea what I was doing.

How To Handle Corporate Burnout and Starting an Online Business?

Can I start an online business while still in my 9 to 5 job, or do I have to leave first?

You absolutely can, and honestly, I would encourage it. You do not need perfect timing. You do not need to have everything figured out. Building something alongside your current 9 to 5 job means you are not carrying all the financial pressure at once, and you get to test what works before you make the leap. I built my foundation during a global pandemic from my living room. You can start from wherever you are right now.

What are the real symptoms of burnout that people miss?

The most overlooked symptoms of burnout are not dramatic – they are quiet. Dreading Monday from Sunday. Lying awake cycling through work conversations. Losing energy for people and things outside of work. Feeling like you are performing a version of yourself that is not really you. Recognising yourself less and less in the mirror. Corporate burnout is a slow erosion, not a sudden collapse. If it has been going on for months, it is your inner voice telling you something needs to change.

How do I know if what I am feeling is burnout at work or just a bad season?

If it has been going on for a while, if this is not a bad week but a bad year, or several years – that is the answer. Burnout at work tends to be persistent and cumulative. For me, I was telling myself something was wrong for four years before I acted on it. If you keep moving jobs hoping the next one will feel different, that is usually a sign the environment is not the only issue.

How do I start an online business with no experience?

Start with what you already know. I had 12 years of corporate experience in fashion buying and strategy, skills I had never thought of as anything other than my job. When I looked at them differently, I had a business. You do not need a business degree or a startup background. You need to identify the skills, knowledge, and experiences you already have, and figure out how to build something around them. The Freedom Founder Playbook walks you through exactly how to do that.

How do I stop my identity being so tied to my 9 to 5 job title that leaving feels impossible?

This is the thing that kept me stuck the longest. Start by listing everything you love outside of work, everything you love about yourself, and everything people compliment you on that has nothing to do with your career. Then start speaking your new identity into existence – out loud, written down, in how you describe yourself. Your brain does not know the difference between fiction and reality. If you start showing up as the entrepreneur you are becoming, you start believing it. And that belief is what makes the first steps feel possible.

Summary: Corporate Burnout Is Not the End - It Is the Beginning of Something Better

Corporate burnout cost me years, my mental health, and a version of myself I am still rebuilding. But leaving my 9-to-5 job – with all its chaos and the unhinged stories that pushed me to the edge, was the best decision I have ever made. If you are experiencing symptoms of burnout, feeling invisible at work, or quietly dreaming about how to start an online business and build something that is actually yours, please take this seriously. This is not just burnout at work. This is a signal. And you do not have to wait for a global pandemic to finally listen to it. Start where you are, with what you have – and if you want the step-by-step starting point I wish I had had, download the Freedom Founder Playbook here.

meet the writer

I'm Sophie

Online business coach, podcast host, mental health advocate, speaker, founder of TINAH, community builder, full-time digital nomad, and general trailblazing, rule breaker…

I tried to live a “normal” life: I spent 11+ years working my way up in the fashion industry, working for brands like Ralph Lauren and Burberry. I had the apartment in the city, I lived for going out at the weekends, spent money on designer bags and holidays – until I realized this lifestyle DID NOT FULFIL ME – I was waking up with anxiety every day – surviving, but definitely not thriving.

So I quit. I left my 9-to-5 behind to start an online business that supported the lifestyle I actually wanted. Now that looks like slow mornings, daily beach walks, co-working with like-minded entrepreneurs, yoga, meditation, and lots of social connections.

Since 2020, I’ve built multiple online business offers – from online business coaching and consulting to online courses, digital products, and a mental health marketplace – all while travelling the world and living life, and earning money on my own terms.

Now… I’m on a mission to help more people break free from lives that don’t feel good for them and create more freedom through starting and growing an online business.