Write all the time, every day, in every possible mood.
Write when you’re so excited to write that you could throw up because you can’t get it all down on paper fast enough.
Write when you have nothing to say.
Most importantly, write when it’s the very last thing you feel like doing—when you’d rather go lick gum off someone’s shoe than write. Write when you’re curled up in a ball and crying, because when you feel that terrible and you’re able to make yourself do it anyway, you’ve already won. It may be the worst writing you’ve ever done, but you’re doing it, and that’s far better than the alternative of not doing it. And as you continue you may realize that you’re not forcing yourself to work anymore. That you are in fact on a roll. That you are on your way to someplace grand and exciting and triumphant, when moments before you were dying.