That’s amygdala irritation.
The combination of fear, self-loathing, irritation, frustration and confusion.
All amygdala flags.
Usually you have a broken productivity schema. You need to find one that settles it down and that includes figuring out what triggers it (usually subconscious doubts).
You know those kids at school who never did the homework? Theirs was practically dead. Too far.
You know the anally-retentive kid who tried to start early (this was me) – too much. Also too far.
You need to learn to be comfortable with a little chaos in your schedule, a little flexibility.
You need to be in good health first, but time management is the #1 Self Improvement Skill anyone should learn, otherwise they can’t learn anything else. They’re fighting an uphill battle against themselves.