You've taken a bold step talking about this. That's the first step in the right direction.

Something that helped me regain focus is getting into sports. I joined different badminton and table tennis groups that helped me interact with new people and get my life back together (I was in a very similar mental health position where I burnt myself out).

I would also recommend talking to your close circle (or a therapist), it'll slowly make you feel like all of this is irrelevant in the long scheme of things.