At this point, I'm probably just echoing what everyone else has said, but taking a step back from playing mons is the best thing to do. Shift your focus and emotions towards learning a new skill (coding is a good one, as suggested by faint; playing chess, writing, learning a language etc. are ones I've considered), relaxing to music etc. It's helped me quite a bit as I've suffered from a few burnouts myself.
When you step back after a while, you may eventually find what brings you into the hobby in the first place. When you get back to it, don't lose sight of that motivation. If u play to experience the enjoyment and euphoria that draws you into playing (i.e play to have fun), that positive energy will get your performance up. If you play without having the desire to leave a good impression for others, or the need to maintain a good reputation, as your only goals, it relieves a fair amount of pressure and mitigates clouded judgement. Also, don't over-complicate the game. In my opinion, mons isn't and doesn't have to be that deep.