Imagine that you are waiting for a bus to get you to where you want to go. Home, for example. While you are waiting, a lot of other buses going to other destinations pass by. Imagine standing out in the middle of the road and stopping all of these buses and telling the drivers that these are not the buses you want. You want the one that gets you to home. This sounds like a ridiculous thing to do.

Imagine when thoughts are going through your mind. You are looking for the ones that make you feel good. Stop stopping the ones that you don't want. Let them pass.