The way I think of it: there's a lot of new stuff that I can do without, and there's a lot of new stuff that improves my life. As long as I stick to the latter, and avoid being persuaded into adopting the stuff that I can do without, my life will probably end up being the better for it.

Am I always successful. Nah. I love my computers far too much for my own good. Yet I think I do better than most. I can live a fairly simple lifestyle, and a relaxed one at that, because I don't feel a compulsion to need everything that humanity has created.