Earlier quoted context omitted.
Step 4: Burnout, depression, homelessness The above is the advice of an amateur who hasn't actually had to tackle work in a self-motivated manner whether the OP fits that mold or not. Moderation and focusing on what is actionable is how you keep rolling.
This is spot on. After four years as an independent, burnout is a huge issue. I'm 1/3 as productive as when I started down this path.
It's taken about five years, but I'm almost back to full productivity. I'm basically back to normal, or better, in my day-to-day work, but I still have almost nothing in the way of progress on side projects compared to before.
Advice:
1. Pace yourself, get some work done, then go make coffee/food, or in my case, go for a motorcycle ride/work out at the gym.
2. Exercise. Hard. No walking on the treadmill shit. Start strength training and do sprints for conditioning/cardio. Our bodies weren't meant to languish in front of a computer and tend to throw a snit-fit if you don't satisfy them.
3. Have a hobby/hobbies that don't involve a computer. As stated before, for me these are strength training and the motorcycle.
4. Read a lot.
5. Focus on actionable, bite-sized amounts of work. Don't think about macro, long-term, or broad scope stuff. You'll just get overwhelmed. Let the dopamine hits come rapid-fire as you check things off in quick-succession throughout the day.
With that, I'm off to ride in the mountains.
Good luck.