Your life is always in your hands. It is up to you what you want to do with your life. You are your own friend; you are your own foe.
If you do good deeds in your life, then you will become your own best friend. On the other hand, if you do bad deeds in your life, then you will become your own worst foe.
Everything depends upon your. You are the master of your own life.
Only you can rule your own life. Only you can change your own life.