5 a.m. isn’t magic. A start time you actually keep is.

Nothing inside a particular hour makes you capable. What does the work is consistency, and consistency comes from a start time you can actually meet on a normal Tuesday with a normal amount of sleep. An impressive schedule you abandon by Thursday leaves you worse off than a modest one you keep. The number on the clock is not the variable.

Choose the earliest time you could get up every day this week without wrecking your night, then set it and leave it alone. Hold it on the weekend too, within an hour. Only move it earlier once the current time stops being hard.