What's so exciting and terrifying about the writing process is that it really is an act of exploration and discovery. With all of us, not just writers, there is a sort of knowledge of the other. We have a lot more in common than we realize, and I think writing is really a sustained act of empathy.
I think what I love most about writing is that feeling that you really nailed something. I rarely feel it with a whole piece, but sometimes with a line you feel that it really captured what it is that you had inside you and you got it out for a stranger to read, someone who may never love you or meet you, but he or she is going to get that experience from that line.
It is not hard to live through a day, if you can live through a moment. What creates despair is the imagination, which pretends there is a future, and insists on predicting millions of moments, thousands of days, and so drains you that you cannot live the moment at hand.