The most solid advice . . . for a writer is this, I think: Try to learn to breathe deeply, really to taste food when you eat, and when you sleep, really to sleep. Try as much as possible to be wholly alive, with all your might, and when you laugh, laugh like hell, and when you get angry, get good and angry. Try to be alive. You will be dead soon enough.
Nobody can advise and help you, nobody. There is only one single means. Go inside yourself. Discover the motive that bids you write; examine whether it sends its roots down to the deepest places of your heart, confess to yourself whether you would have to die if writing were denied you. This before all: ask yourself in the quietest hour of your night: must I write?