How do you deal with extreme burnout?

I know what you mean...
For me, on weekends or after work, doin' some activity like wakeboarding or kitesurfing with my team mates helps A LOT!
Basically, any kind of sports can help to remove a little of pressure.

For me the important part is to prevent it. I've never been able to overcome it, once I reach the burnout it always results on switching jobs.

1. Don't be always working. 8h/day is enough. No overtime and no slack, email or github on my cell phone.
2. Only spend time on side proyects when I have the strength to do so.
3. Have fun and spend time with my loved ones.
4. Get my health checked (bot body and mind)
5. Last but not least, at work dare to challenge the things that burn me. Many can be changed.

I totally get this. I am currently CTO at a startup and work partime as well since the startup is still self-funded. How I cope with burnout is I try to take the little time offs away from my computer, no matter how little they get away from that computer and do some outdoor activity. Go to a park, see a movie, go on a date anything but the computer and don't think about it either.

I guarantee you will come back looking refreshed.

Just turn off the phone and shutdown the computer for 9-10 hours to rest. Easy, simple.

Two questions come to mind :

1. Is the burnout just long working time, or is there some harassment involved ?
2. How strong is your financial pressure ?