I got a new job that was 10 mins onna-bike from home, rather than the other side of London.
I used to cycle when I was a child/teenager, but I lived in a very small and quiet town (with too many hills!). I left the bike behind when I moved to London, and when I borrowed my cousin's bike, one summer, I scared everyone with my lack of balance. So I concluded that I had lost my cycling powers and didn't really consider it for several more years.
Then new job, and Juliet led me about the park on her hybrid, and I did not fall off! Or even wobble too much. So I bought a bike, and now cycle almost everywhere.