Write.

"Perhaps it would be better not to be a writer, but if you must, then write. You feel dull, you have a headache, nobody loves you, write. If all feels hopeless, if that famous “inspiration” will not come, write. If you are a genius, you’ll make your own rules, but if not – and the odds are clearly against it – go to your desk, no matter what your mood, face the very challenge of the paper – write."

J. B. PRIESTLEY