"Fuck excuses, learn to admit when you fuck up." This includes trusting the wrong people (and subjecting yourself to abuse). If you never admit you're involved, the same shit will happen to you, ad infinitum.
Some times things are said that hurt. They may not have made any difference to you, but they do to the person you spoke them to. This can also work the other way. Encouraging words can stick with someone as well. Choose your words wisely
In our house. only hugs, smiles and warm fuzzy feelings are allowed. (remember that little book - all I ever needed to know I learned in Kindergarten =- yeah that is what my baby is learning now -warm fuzzy vs cold prickly).