What you are really talking is about making a decision to raise your standards. The human mind does not process negatives very well so telling someone to stop doing stupid shit is a hit or miss message. Really the title of this post should have been, "How to be good at everything: Raise your standards." But that isn't as catchy or sticky as "Stop doing stupid shit."
Raising your standards means setting a new bar of what you are going to expect from yourself in a given task or skill. It comes with the presupposition that you can meet the standard thus the added confidence. Many people do "stupid shit" but don't know why. And frankly the 'why' doesn't matter. You have to believe that you can improve and setting standards is concrete way of telling your mind you won't accept certain behavior anymore.
Of course this sounds easy but it's not.
Making the decision is the hardest thing anyone can do. It comes with consequences, both good and bad. Consequences in potentially eliminating the fulfillment of needs you may have or possible coping mechanisms you have grown into. When you make a true decision you cut off possibilities.
Raising your standards necessitates making a 'real" decision and cutting off options. Sometimes doing stupid shit is the only way some people know how to wrap their head around the f*cked up things they have come to understand.
Of course this sounds easy but it's not.
Making the decision is the hardest thing anyone can do. It comes with consequences, both good and bad. Consequences in potentially eliminating the fulfillment of needs you may have or possible coping mechanisms you have grown into. When you make a true decision you cut off possibilities.
Raising your standards necessitates making a 'real" decision and cutting off options. Sometimes doing stupid shit is the only way some people know how to wrap their head around the f*cked up things they have come to understand.