This are all absolutely burnout symptoms. The brain is forcing the body to march, but the body is rebelling against the lack of progress. See Maslach Burnout In

This are all absolutely burnout symptoms. The brain is forcing the body to march, but the body is rebelling against the lack of progress. See Maslach Burnout Inventory for a full list. The only known cures for burnout is either removing yourself from the environment or getting more progress. You might be measuring progress differently to your body. Your body wants good food, exercise, sex, hugs, friends, spirituality, sleep, etc. One trap people tend to fall into is early retirement - work life sucks, therefore, save money, live like a miser, work like a dog, and it will be over by 40. But the body may not take this very well. I'm not saying FIRE is bad, but be careful how you do it.