Maybe take a break from visiting any website that sells items or anything else. As far as purchases that are mandatory, make a shopping list of only the necessities and stick to it, if at all possible. I know that's hard, believe me. I'm going to also write on my list "Think hard before buying anything not on the list!"

I am a frugal person, in most respects, except when it comes to food/cooking and related supplies. I have recently started a challenge for myself to buy groceries as efficiently as possible (spend only X amount, and use coupons and sales to pay a minimum). My manic mind loves challenges and projects. For me, the key is to get myself very involved in ones that do more good than harm.