Simplying life means changing your lifestyle. Changing the way you live isn't done in a day, and it isn't done successfully without some major internal alterations.
You have to change your attitude. You have to change what you value. You have to change the way you think.
For me, that means reading Joyce Meyer's Battlefield of the Mind and then re-reading it periodically. You can even buy it as an ebook these days (Barnes & Nobles offers this version for $8.99; the paperback is a couple of dollars more, new.)
Yes, this is a Christian book. Essentially, Joyce Meyer is telling you that the battle for your life is between your ears. Lessons are provided, founded in Scripture, that teach you how to change the way that you think, to recognize and tear down strongholds in your thinking, to know what thoughts and thought patterns the devil uses to thwart you, and first and foremost, this book teaches you to start thinking about what you're thinking about. To watch what and how you're thinking.
Using the 40 Years in the Wilderness, Battlefield of the Mind identifies "wilderness mentalities" that can be wrong ways of thinking - and instructs you on how to win the battle of getting those ways of thinking out of your head.
If you're ready for change, then you're ready for the fight. Go buy Battlefield today. Get a used copy to save money, but this isn't a book to check out from the library. You'll want to have this as a life tool, something to take notes in -- something to go back and re-read every so often.
It's that helpful, it's that good.