I don't remember deciding to become a writer. You decide to become a dentist or a postman. For me, writing is like being gay. You finally admit that this is who you are, you come out and hope that no one runs away.
It's just been so heartwarming to see my clothes on people in wheelchairs and people needing physical support.
Because of my Calvinistic upbringing, I was trained to think that what you do has to have a purpose.