Don't worry about the big picture.
Every day, find yourself some wins and celebrate them.
Maybe it's something as small as brushing your teeth. Dental hygene rocks -- go you!
Or leaving the house and going to Starbucks, even if only to browse Reddit. Hey, getting out that door can be a big challenge.
Maybe it's going for a run or a hike. You totally owned that half-mile.
Whatever it is, write it down in a list, and look at yesterday's list every morning.
Every accomplishment, no matter how small, is a step forward.
Celebrate the fact that you made that step, and didn't give up.
One more thing:
I don't know where you, the OOP, are, mentally.
So while burnout is serious shit, depression is even more serious shit.
And we don't talk about it enough in the tech community.
Whenever I move to a new country, I immediately identify a local English-speaking hospital and dental practice. Because if I ever need them, I will need them on a very tight timeframe.
So, I would invest a little time and find a quality psychiatrist. Somebody that you feel comfortable talking to, and that gives you good advice.
Do what you would do with any professional service, and shop around until you find one you really like.
That way, if you ever really do hit rock bottom, you know where you can go, and don't need to start searching when you're in no shape to do so.