Just cos you can charge it, don't. I try to only use my credit card when it behooves me to do so. For buying stuff on the internet it's great because your credit card company protects you if you get ripped off. Or sometimes you can only use your credit card for stuff. Even the rich guy on Oprah agreed with not spending beyond your limits.
Poor people stay poor but have a rich facade.
A hard one for me. Only go to matinee movies. Don't go out to eat with large groups. It's one of the big mysteries of the world. Submerge yourself in something that is really important to you.