The hardest thing to tell is when it's related to feeling. Problems prepare us to be a better person tomrw. Sometimes, problem is created to show you sth that you have never expected before. There may be confusion in solving those problems, however, the spirit i got from my best friends have awaken me up that in life we must have a simple thing's called commitment. Having commitment is totally different from being a stubborn,that's what i learn today. People may change, but the memories don't.