For example, even if you understand how important it is to make beliefs pay rent in anticipated experiences, actually doing that can be really hard. Why is it so hard? Possibly for a few different reasons, but prominent among them is the following. If you've thought something lots of times without ever explicitly identifying it as something you're thinking, without putting much distance between yourself and the thought, your sense of self gets tangled up in it. It's not nice to let go of something that close to you, even if it's useless or harmful. It feels sort of like trying to kick out your own child when you know you can no longer afford to take care of her--and it feels distinctly unlike taking a broken blender to the dump, which is closer to what should really be going on.