You are greater than the thoughts that dominate your mind. You are the space in which they happen.
Let there be space in your mind, so that your thoughts can know their Master. This space is more powerful than thought. This space is YOU, without which no thought could ever be.
You are the supreme ruler of your thoughts. You choose which thoughts you give breath to.
Let there be space in your mind and the dominant unhealthy thoughts, that do not serve you, will begin to lose their strength. This is how powerful space is. This is how powerful you are over your thinking.