To put it simply, I don't exert myself. My pace of work is really bad. I quit during the day far too early.
I use the "pomodoro" system of productivity and once I hit 8, I start on my long list of hobbies. I know I'm capable of doing 12 or even 16.
I put in a good day yesterday, far more productive than usual. I thought to myself: this is actually what a normal day was like when I was working.
I rarely work until exhaustion.
Any thoughts?