Discipline

Harris Kern and Karen Willi's Discipline is a blunt, no-philosophy playbook for people who want to overhaul their daily habits through military-style structure. The centerpiece is the PRIME framework — a set of practical charts mapping your current routines against recommended ones for sleep, diet, exercise, and mental focus. If you respond to directness and want something you can act on the same week, the short chapters and concrete tools deliver. The honest caveat: nearly everything here rests on Kern's own story. There's thin universal research behind the advice, and the heavy emphasis on individual willpower over community or faith may feel one-dimensional to some readers. Worth picking up if the no-nonsense approach clicks for you.