You will have to learn that you cant control everything if you want to avoid stress and move forward with your life.
You need to accept today that you cant control everything in your life, some things are unpredictable, and some things just wont go your way. If you try to fight against things and attempt to control everything you are going to bring yourself a lot of stress and anxiety. Instead, learn to accept the way things are and use your energy as motivation for moving forward with your life.