Fear has to be approached positively. Fear is not your enemy, it can be your friend. Depending on their disposition, they will either run or fight to save themselves. But we have to face fear. This is the first step to healing.
Every thought has psychological and physical effects.
Force yourself to think positively. Find whats positive in everything that happens to you. Look for the silver lining in every cloud. Write down everything on a piece of paper - negative emotions and thoughts that you want to change. Then burn the paper, lie down, close your eyes and listen to music.