detached from our on thoughts

We have to practise being detached from our own thoughts.I have to create the thought , "I the soul, am in the stage of my world drama, watching my thoughts come up in the screen of my mind---as you watch them ,they will begin to slow down.Sort through them, discriminating between the positive and the negative or waste ones. Have actions replays of the best thoughts. If my mind is  not obeying by having negative thougts  we have to concentrate on the basic thought:-- "I am a peaceful soul" Sometimes the mind will naturally go in a  positive way when I sit in meditaton. But at other times it need firmly steered and guided to avoid crashing into the rocks of negative emotions and thouhts1