My passion and desire is forcing me to work. Time to become a monk i guess

After the 4th hour I get a headache so bad that I am unable to function.

Thanks for the comprehensive answer. I will need to process that I can’t do all the things I wish I would be doing; and learn how to take a break. Some time ago I installed the pomodoro timer but it has been sitting misused on my desktop tray. I think it should finally get some use.