I'm like that at the moment. I've had a couple of huge opportunities to push my art career forward and both times I've balked. I go through phases, usually when I have a lot of work on, when I just *can't* draw. It scares me.
I do have depression though, it's a side effect of Fibromyalgia which I have suffered from my entire life. It's horrible, paralysing... so I do sympathise. But I can't offer any solutions - there simply aren't any. Not that I've discovered yet anyway.