Runaway Train

Your mind can be like a runaway steam train if you let it. It can take you off to thoughts of the past, and then take you off to thoughts of the future by taking past bad events and projecting those into your future. Those out-of-control thoughts are creating, too. When you are aware, you are in the present and you know what you are thinking. You have gained control of your thoughts, and that is where all your power is.

And of course my favorite saying “Does your train of thought have a caboose somewhere?”