What I find helps is that I only purchase something if I need it for something specific. And right now I'm in the middle of wedding preparations. All the stationary, favors, decorations, etc. I asked for tools and such that I would need for this adventure for my birthday. I had a SU workshop yesterday, and am getting the big shot and the rosette die for 50% off, plus $80 in freebies and a few other tools.
Designer paper is my downfall and I find it difficult not to spend on it.