If you’re open, you’ll find your trouble spots while you’re in the practice room. But if you try to avoid mistakes, you’ll find those blind spots on stage. Not cool.
If you listen to a mistake without judgement you may find a solution to a problem, a development of your melody, or a whole new style. Be like Hendrix & others who really listened, leading them to deliberately crank their amps to get that “bad” distorted sound.