Living is similar with playing game; there are various missions to get through it. It is more difficult when you get through higher levels. Life is also the same when you grow up, you will face various problems that use higher and many skills to pass it. But life is not actually the same as game, it is cannot play in the last missions again. Only thing that you can do is learn from the last mission, it is called experience and apply in the next different one which is coming.