Joanna Cannon left school at 15, with just one O-level, and spent years working in a series of jobs - including delivering pizzas - before making the bold decision in her mid-30s to follow her dream of becoming a doctor. Now, 57, she reflects on what it took to change direction in midlife and why she believes it's never too late to start again.
"As a teenager, the pressure of deciding what I wanted to do with my life was so overwhelming that I opted out of education, aged 15, with just one French O-level. I carried on reading textbooks while taking on all sorts of jobs, from kennel maid to waitress, but never got round to heading back to school.
