Where IS my power?

I've been thinking about this for a couple of weeks since Jerry mentioned it in the A Course In Miracles class, so here goes. Caroline Myss says that we breath power into our ideas and beliefs. Hmmmmm! So I have been examining what ideas and beliefs I have breathed my power into, and it's pretty interesting. Some of them really no longer serve my highest good and I am withdrawing my power from them. Such as: "Life is hard", "There isn't enough . . .", "We all get old and frail and whither into death", "I'm right", "Hard work is the only productive use of my time", etc. etc. etc.
So, what do you think? Let me know. Have left your power in ideas that no longer serve you? Please share.