How to gain self confidence after humiliated.

  When I was younger there are times when I get humiliated in school or other places. I get mortified and regret what I have done, wishing that there was a time-machine or a chronosphere I could use. The embarassment lasted for a long time, I keep remembering it everytime I go to bed.
   I just couldn't stop thinking about it and I don't know about you but I laughed like an idiot eventhough it wasn't funny. Even if my friends or family tried to cheer me up and I myself tried to cheer me up with music or games, it didn't seem to work often. I knew I had to defeat this uncomfortable memory.
   A few years ago, I found that thing happening to other people too. Something went wrong on that performance, that person was so sad, we couldn't cheer him up at all. And after a while I realized something, something I could use to cheer me up. At that time he was sad and we all know that but that didn't turned into a memory that comes on the first page of a news paper. I was a sad memory but it wasn't strong anymore.
   So everytime I got myself humilited to anyone, I give them time to process another bigger news and I know that they would fell the same way I felt to that person, so it works. Nothing seemed to bother me anymore.