In all forms of art, there is this myth of the tortured genius cranking out paintings or music or manuscripts. I can tell you for a fact that Van Gogh painted nothing when he was manic or depressed. I can also tell you it's the same for me. I've been blocked, not by a lack of ideas, but by a lack of caring for myself or my muse.
Taking a moment to every day to think of something happy and positive is already working wonders. I'm sleeping better, I've been kinder to myself and my mood is already more stable.
And now for the big win: Today, I started writing again.
Maybe there is something to this daily meditation thing, however you choose to do it.