The only advice I can give to aspiring writers is don't do it unless you're willing to give your whole life to it. Red wine and garlic also helps.
I think of guitar players in terms of doctors: you have the doctor for your heart, the cardiologist, then one that works on your feet, your leg. But I believe George Benson is the one that plays all over. To me, he would be the M.D. of them all.