What is energy level journal template?

Energy level journal template is a concept in personal epistemology: Track your energy levels throughout the day to identify your personal patterns.

Example: A freelance writer kept a simple energy journal for six weeks. Every two to three hours she recorded the time, what she had been doing, her energy on a 1-10 scale, and a brief note about what shifted it. For the first ten days, the journal told her what she already knew — coffee helped, afternoon meetings drained her, mornings were her peak. But in week three, a pattern appeared that no single-day audit could have revealed: her energy crashed every Wednesday, regardless of what she did that day. When she traced it back through the data, she found that Tuesday evenings she stayed up late preparing for a Wednesday morning client call she dreaded. The crash was not about Wednesday. It was about the anticipatory anxiety on Tuesday, compounded by the sleep deficit it produced. She moved the client call to Thursday afternoon — a low-energy slot where she had nothing to protect — and her Wednesdays recovered within two weeks. The journal did not give her better willpower. It gave her better vision across time.

This concept is part of Phase 36 (Energy Management) in the How to Think curriculum, which builds the epistemic infrastructure for energy management.