Finish each day and be done with it. You have done what you could. Some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day. You shall begin it serenely and with too high a spirit to be encumbered with your old nonsense.
Read, read, read. Read everything–trash, classics, good and bad, and see how they do it. Just like a carpenter who works as an apprentice and studies the master. Read! You’ll absorb it. Then write. If it’s good, you’ll find out. If it’s not, throw it out of the window.
Writing is a form of therapy; sometimes I wonder how all those who do not write, compose, or paint can manage to escape the madness, melancholia, the panic and fear which is inherent in a human situation.