We naturally want to discover more about ourselves through whatever it is that we attempt to do in life. And in order to do anything to the best of our ability, we must necessarily envision the kind of outcome that we want. But whenever events do not turn out as expected, we usually get angry at ourselves for having missed the mark. Anger is always the negative expression of some form of resistance that occurs when the expectation that we bring into a moment goes on after the moment has passed. The anger seems to prove that we could have done better than what we just did.
If we could really see ourselves at those moments in which it seems as though we have failed, then we would see that anger is present because of an image we have of ourselves as someone who is flawless, faultless, and perfect. Anger does not prove that we could have done any different than what we did; it only proves that we will not let go of who we think we must be.
We become more willing to let go of our image of being perfect and beyond reproach when we begin to see that holding on hurts. Then we are ready to start over again, discover again, and little by little anger becomes a thing of the past.