You cannot control the circumstances and events that happen in life. To try only creates anxiety and frustration only to end in failure. Trying to control unexpected and undesired life's circumstances is a form of trying to "play God." You will make mistakes, hurt relationships and lose your mental health in the process.
What you can control, however, is your attitude and your perspective on every situation. You must trust God that his thoughts and plans for you are good and that he guarantees you an expected end of abundant life.
Rom 8:28 "And we know that ALL things work together for good to them that love God, to them who are the called according to his purpose"By doing so, you can can control your destiny. Your only concern should be to get to your promised land not what road and what circumstances it takes to get there. Leave that up to God and you will end up not only fulfilling your dreams but exceeding them beyond your own imagination.
Living the Christian life is one of adventure. If for one minute you think that it is supposed to be a cake walk then you are not only mistaken but you signed up for the wrong religion.