
Watch em squirm!
Many people would rather concede the last few balls than watch their opponent shoot them in. There's no giving up in pool. Watching the horrible scene of an opponent shooting the remaining balls in with ease should be used to get your head back into "never give up" mode. Even when losing, you gotta use that situation to build your game. Lean into terrible feeling and make it a goal to never experience that again. Use it as an opportunity to quickly overcome negative thoughts and get back into the game. Master stoicism.
That's something to practice, digging down deep and not giving up. Gotta play the game out, it's 9 ball so you gotta get all 9 balls off the table. Give the game enough respect to let it play to it's conclusion.