Controlling my shopping tendencies

I have been thinking that I need a new hard drive to backup my computer. I think this is a want more than a need though. So, I've been spending the last few days convincing myself not to go to the electronics store. Tonight I finished work relatively early, and I'm very proud of myself... I did not go shopping despite the fact that my feet wanted to take me in that direction. No shopping! Gotta save money!