Although my other ambition was to be a musical theater star (and I would attend college on a voice scholarship), writing was never far from my mind.
Any experience that isn't fun is probably something I will at least use in my writing someday.
Each of my books took roughly one and a half years to write. Some may have taken a shorter time to write the draft and a longer time to revise, while others were the opposite.
I write contemporary fiction, and that is what my readers want to read.