That’s where Charlie stumbled across a simple way to magnify his learning technique: if you really want something to stick in your mind, share it out loud twice in one day, consciously, purposefully, intentionally. He told that running back to share, twice a day, the importance of carrying the ball high. Tell anyone. Preach it, yell it, write it, tattoo it—twice a day to anyone for any reason. That way he’d never forget.
