No mistakes of the past can't be erased. When we make a mistake it was necessary to make the mistake. That's why from that experience we can understand which one will be good for us. There is a common phrase, 'everything happens for good and whatever happens will happens for good too. ' So it's better to laugh on your mistakes than to drawn to yourself in the sea of depression by thinking too much about your mistakes. Because the person who knows to smile knows how to move forward with the obstacles in life. | Quote by Annie