I always treated writing as a profession, never as a hobby. If you don't believe in yourself, no one else will.
My mother speaks of my step being a source of life-long pain to her, that it is a living death, etc. By the same post I had several letters from anxious relatives, telling me that it was my duty to come home and thus ease my mother's anxiety.
Examples is more forcible than precept. People look at my six days in the week to see what I mean on the seventh.