Life is a learning experience. Every positive or negative result should be taken into account. Repeat the good and disregard the bad. If something goes wrong, find the humor in the situation and push forward.
Life is not always easy or happy, but the bad is there for you to appreciate the bright areas and happiness while they are present. As Talib Kweli puts it, "Life is a beautiful struggle". It's difficult, but hopefully you've found your support system and you believe in your capabilities.
There are many things in your way, strategically placed to prevent you from living up to your potential. Are you paying attention? Do you recall the common sense, knowledge, and tools you've been equipped with to smash those barriers? Where do you come from? Where have you been? Do you understand where you're supposed to be?
Just a few questions to contemplate...