Crimestop is like trying to not think about a bad thing that you don't want to happen. Remember when your mom tells you not to think about eating candy before dinner? That's like crimestop. Your mom wants you to not think about the candy because if you keep thinking about it, you might end up getting too excited and eat it before dinner. In the same way, if someone is thinking about doing something bad like stealing or hurting someone, they might try to use crimestop to stop themselves from thinking about it so they don't end up doing something bad. It's like putting a stop sign in your brain so you don't go down a bad path.