Energy budgeting beats time blocking (most weeks)
Time blocks assume every hour is the same. Your body knows that's a lie.
Time blocking assumes an hour is an hour. Drop a deep-work block on the calendar, and the calendar treats 9am the same as 4pm. Your nervous system disagrees, but the calendar wins, because the calendar is what we actually look at.
Energy budgeting starts from the opposite premise: not all hours are equal, and the highest-leverage move is matching tasks to the energy you actually have. Three high-energy hours protected for the work that matters. Lower-energy hours given to lower-stakes tasks. Recovery treated as scheduled, not stolen.
The implementation is unromantic. Tag your common tasks with the energy they require: 'sharp,' 'medium,' 'soft.' Notice which hours of your day produce which kind of energy. Match. Most people discover they have far fewer 'sharp' hours than they thought, which is the painful but useful lesson.
What this looks like in practice: a writer who used to schedule a 9-to-5 block of deep work realizes they have 90 sharp minutes between 8 and 10am. Everything else gets reshuffled around protecting that block. The total output goes up; the felt struggle goes down.
Time blocking treats a day like an empty container. Energy budgeting treats it like a battery. The battery model is the truer one — and the kinder one.