Fix your golf grip with a ruler

Grab any ruler you have lying around. Thin edge up, thumbs centered down the top edge. If your grip is too strong or too weak, your hands are twisted too far right or left before you even start the swing. From there the face is either closed or open at address and you spend the entire swing trying to compensate for something that was wrong before you moved an inch. A misaligned grip doesn't just affect the face. It creates tension, it twists your alignments, and it invites manipulation at exactly the moment when you need to be free and loose. The ruler gives you a simple, repeatable reference point to check where your thumbs are sitting every single time. Center them on the edge, seal those Vs, and you've already given yourself a better start than most golfers ever get.