Every people imagined that they could time travel or go to in time. Even people that are successful think about time traveling. Many movies in this time like science fiction movies talks about time traveling; because a person fantasies time traveling. Some of the scientist wanted to make a time machine in order for them to correct their mistakes in the past. But they failed to finish the experiments. All of this make up one question in my head. I wondered that how can people affects his or her life in the present by changing his or her past by correcting their mistakes in life.