In my earlier years when talking to my mom about bad thoughts that would not go away, she gave me an example that helps me understand the way my mind works. She compared a person's train of thoughts to a stage. There can only be one scene at a time, though scenes are complex. They are filled with dialogue, costumes, and a specific setting. When a bad thought won't go away, it's like a bad scene in the play. "You are the director so you can move on to the next scene in the play. Your mind can only concentrate on one thing, or one scene, at a time."
I appreciate you reading all the way through this post. Sorry about the length. To reward your efforts, you can have two virtual Jessica hugs and I'll give them to you in real life the next time I see you. :)