If we can be cheered up by positive images we can be depressed by negative ones. As long as we accept images as realities we are in that trap, because you can't control the images.
David BohmIf you engage in positive thinking to overcome negative thoughts, the negative thoughts are still there acting. That's still incoherence. It's not enough just to engage in positive thoughts when you have negative thoughts registered, because they keep on working and will cause trouble somewhere else.
David Bohm