I recently read some comments Steve Jobs made about following one's heart. He said he read a quote when he was 17 that said something like, "If you live each day as if it was your last, someday you'll most certainly be right."
He talked about how, since that day, he looked in the mirror each morning and asked himself, "If today were the last day of my life, would I want to do what I am about to do today?"
He said whenever the answer had been no for too many days in a row, he knew he needed to change something. He says...
"Your time is limited...Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition...Everything else is secondary."
I think this is terrific advice, regardless of the path one takes in life. As writers, it is utterly important to have the courage to follow one's own inner voice. Life is too short. Love what you do and follow your heart.