God sometimes allows us to endure challenges so that we learn to depend on Him instead of ourselves. In the moment, it seems unbearable and it is extremely frustrating because we do not see how it could ever work together for good, but then God chooses to reveal a part of his plan and we can breath a sigh of relief because in that moment, He reassures us that He is in control.

So... if you are feeling like your world is out of control, remember that someone does control it. It is just not you. The people in your life will make choices that disappoint you, hurt you, and make you angry. I am speaking to myself too when I say, do not be discouraged, "We know that all things work together for good for those who love God, who are called according to His purpose."
Romans 8:28