Definition of Success
I heard this a long time ago and as cliche' as it is I still love it and have to repeat it for those of you who haven't heard it yet.
Success is the result of Good Judgement
Good Judgement is the result of Experience
Experience is the result of Bad Judgement
Recognizing, Admitting, and most importanly learning from one's mistakes is probably the most important thing you can do in your life and in your business.
My dad's generational phrase was the classic "Fool me once, shame on you!" "Fool me twice, shame on me!"