The Mel Robbins 5-Second Rule

When you feel the impulse to do something you know you should do — speak up in a meeting, start the workout, make the call — count 5-4-3-2-1 and physically move. The countdown interrupts the habit loop that normally kicks in to talk you out of action. It's stupidly simple, which is why it works. The gap between knowing what to do and doing it is almost always a hesitation problem, not a knowledge problem.