Thoughts from Worry Free Island: Your mind reacts to your thoughts exactly the same as if a situation existed. Therefore any pain or anxiety about the past or the future is controlled by YOU and what you think. If you fill your mind with stressful scenarios, the way you feel will respond exactly to what you are thinking.
TIP: Try and change your thoughts, even for a very short period, and experience how your feelings change. The longer you can control your good thoughts the better you will feel. This simple thing is not easy, but the more you control thoughts about things you cannot control, and replace them with good thoughts, the better you will feel.