one month - no shopping!

I've been toying with the idea of taking on this challenge after seeing Jen and Grace do it. I'm constantly surrounded by products, whether I'm at work, blogging or browsing Pinterest and I really want to make a conscious effort to spend less. I can always find a way to justify anything and I'm hoping this experiment will help me improve my spending habits and help me see that I don't "need" everything I seem to think I do. Fingers crossed that I can make it! And don't worry, my Currently Coveting posts aren't going anywhere—I'm certain I'll build up a mile long wishlist during this! 

Have you ever done something like this? Any tips or advice?