Help! How do you resist Steam sales?

I ask myself: do I have enough money for food if I buy this game? If the answer is no, I will not buy anything...

I usually tell myself not to get something until I hit a gaming goal. It's usually like finishing a game, completing all the achievements on another, or getting my overall achievements above a certain threshhold. If I spot a really great bundle, I'll get it. I'm kinda lucky in that I don't have much free time anymore, and the internet is crappy where I live, so I'm limited to single player games really.

I usually look @ my bank account, and well, it's usually empty, so that settles it. :D

Welll.... I rarely get money, so I save it for a greater cause, my new pc, and sometimes (Like today I buy the Humble Bundle, use the keys I want and give away or sell the rest.

I'm using cube, when it shows 1,3 or 5 dots i'm not buying, when it shows 2,4,6 hmmm buying time :D

Gabe : Its steam sale !!!!
Me : Omg !!!! Can't ressist !!! Nooo my dear wallet TT ... nooo....

Make some rules. I, for examble have too much rules.

Steam:
Game should make a 0.2€ or bellow cost/hour of gameplay
Game should be <3.5€

I use this (100*(0.1-(CH/MR)) to rate my purchase. CH = Cost / Hour and MR = My rate of the game. It depends on the rating system you use but for me it is a good purchase if it is >7 (rate = 1-10)

No money, no problem ;).