Minimizing the amount of marketing literature you expose yourself to is a good start. In fact, that's a good way to reduce your exposure to many of the weapons in marketers' vast arsenal. Exposure to marketing materials should be limited only to what is necessary to evaluate what objective benefits are offered with a product or service, and what it costs.

One technique is to read those minimum necessary materials, take notes on the actual objective costs and benefits, omitting all marketing buzz, and then walk away from it until any excitement from what you read fades. Later, you can review those notes with a clearer head. Or better yet, hand them off to someone else to evaluate, who hasn't been exposed to the propaganda.

It's also a good idea to read Robert Cialdini's Influence, and then reread it periodically. It's an excellent (but far from complete) run-through of some of the most common tools used by marketers, and techniques for resisting them.