Sleeping a lot is great advice. When you're awake, a good distraction goes a long way, especially if it's something that can be worked on.
Something like finishing every episode of a tv show, or building something in a creative game.
Brains react to physical projects better (e.g. sewing, building a model, drawing on paper, going for walks) but they can be frustrating if you feel they aren't going right, so try both types.
Depending on your mobility and energy levels caring for things is really effective. Something like picking up random trash on the street or taking care of animals at a rescue. I can't move around too much so for me it's rescuing little bugs before my family squashes them. If you have a way to take care of inanimate things you like, that works just as well.