I've been there and done that many times. My heart goes out to you. 1, you will get through it. . . 2, something beautiful will come from it.
At times like this, I look at new patterns and fabric. Something will hit you or it won't but keep going. Sometimes we just have to "Act as if" and start a project. You would be surprised how many time this soothes and boosts your mood gets your interest and enthusiasm back. Good luck