Everything you see and feel is just interpretation of the real world by your own brain. The world is not good, not bad, all you feels is the mixture of incoming information.

It works in chain: information - energy flows in your mind - your organism bursts some kind of hormones - your body reacts to hormones. Sometimes information can even kill ( when people learn that something bad happened to their relatives). So your only way is to take control of the situation, install filters ( when someone wants to you to react emotionally he wants to control you. So all I want to say is just be yourself.