For every mistake that you learn from you will save thousands of similar mistakes in the future, so if you treat mistakes as learning opportunities that yield rapid improvements you should be excited by them. But if you treat them as bad things, you will make yourself and others miserable, and you won't grow.

To test if you are worrying too much about looking good, observe how you feel when you find out you've made a mistake or don't know something.

I don't think there is such a thing as the perfect system.

Ironically, people who suppress the mini-confrontations for fear of conflict tend to have huge conflicts later, which can lead to separation, precisely because they let minor problems fester. On the other hand, people who address the mini-conflicts head-on in order to straighten things out tend to have the great, long-lasting relationships.

Most people have a hard time confronting their weaknesses in a really straightforward, evidence-based way. They also have problems speaking frankly to others. Some people love knowing about their weaknesses and mistakes and those of others because it helps them be so much better, while others can't stand it.

Pull in your belt, spend less, and reduce debt.

Do not feel bad about your mistakes or those of others. Love them! Remember that one: they are to be expected; two: they're the first and most essential part of the learning process; and three: feeling bad about them will prevent you from getting better.