Whatever you call yourself in your head starts to become the default setting. Pick the words on purpose.

The words you use about yourself when nobody is listening do not stay neutral. Repeat lazy or stupid or dramatic often enough and it stops describing one bad afternoon and becomes the setting you work from, which quietly changes what you are willing to try. Nobody picked those words on purpose, which is exactly why they are worth picking on purpose.

Catch one phrase you aim at yourself this week and check whether it is accurate. Trade it for something true and smaller, like being behind on this rather than hopeless. Accuracy is the goal here, not flattery.