Along these lines, I once heard somewhere that people do not process the word 'dont'. As a coach, I've had to shift my vocabulary to focus on the 'do's rather than the 'dont's
Eg: If you're doing a sport where leaning forward is bad, avoid telling yourself 'dont lean forward' as your mind only hears 'lean forward', therefore reinforcing the thing you're trying to avoid. Alternatively, tell yourself 'lean back' or 'stay straight' or whatever you're focusing on for that maneuver or drill.
