I don't teach writing. I teach patience. Toughness. Stubbornness. The willingness to fail. I teach the life. The odd thing is most of the things that stop an inexperienced writer are so far from the truth as to be nearly beside the point. When you feel glosbal doubt about your talent, that is your talent. People who have no talent don't have any doubt.
A good story needs only a good storyteller.
When you reach a place where you feel blocked, lower your standards and keep on going. There is no possible way to do permanent damage to a piece of writing. You cannot ruin it. You can only make it a little better a little at a time.
Mostly you write to find out what you have to say.
To my mind, nothing is as important as good writing, because in literature, the walls between people and cultures are broken down, and the things that plague us most—suspicion and fear of the other, and the tendency to see whole groups of people as objects, as monoliths of one cultural stereotype or another—are defeated. This work is not done as a job, ladies and gentlemen, it is done out of love for the art and the artists who brought it forth, and who still bring it forth to us, down the years and across ignorance and chaos and borderlines.