The highest level to operate from is gratitude. When you come to a place of being grateful for EVERYTHING, the "bad" experiences no longer haunt you, the mistakes no longer consume you and you are able to fast track your goals because you are free from the mental baggage that most people call the "past."
In every situation, there is a silver lining. It's not a matter of being like Pollyanna. It's a matter of answering one question: Do I want to be the victim or the victor in this situation? The victim lives in a constant state of repression, trying to forget what was, afraid of what will be, and unsure of how to live now. The victor accepts what was, embraces what will be and knows that, in this moment is his or her power to choose differently.
You don't have to be perfect to live your dream. You don't have to be lucky to have the life you want. However, you must be grateful. The more gratitude you have, the faster your dreams become real. Test this out.
How many complainers do you know who live extraordinary success on a consistent, continual basis? I don't know one.
No matter what the day brings, keep in mind one rule of thumb:
Never complain, never explain, always BE grateful.