I had a job in IT at the University of Cambridge. I moved to Sydney for personal reasons and worked in a government policy job for a few months, and then applied for an IT job at the University of Sydney that was similar to the one I'd had at Cambridge. I wasn't even shortlisted. At around the same time, I was offered me a job as what Americas call an adjunct professor in philosophy, despite having no relevant qualifications. I took that, and it was fun, so I became a philosopher. If there's a moral to this story (and there is!) it's that careers are unpredictable.