Sometimes poor behavior is simply bad execution of good intent.
I see myself living by correct principles and accomplishing worthy purposes. One of my favorite quotes is, "The greatest battles of life are fought out every day in the silent chambers of one's own soul." (David O. McKay).
Beginners are many; finishers are few.
Live out of your imagination, not your history.
What does it matter how much we do if what we're doing isn't what matters most?
If you are an effective manager of your self, your discipline comes from within; it is a function of your independent will.