The Slacktivist has a good post about living the gospel in light of American materialism. In particular, he presents a “wear it tomorrow” rule to help us decide which articles of clothing we probably could stand to part with:
When in doubt, try the next-day rule. Set it aside and say, out loud, “I’m going to wear this tomorrow.” If hearing yourself say this doesn’t produce an immediate sense of enthusiasm over the prospect, then get rid of it.