Gas and food, definitely.

I am not very good at money management, or at least, not as good as I could be. I am a pretty thrifty shopper, but I tend to lose track of things and waste money unnecessarily. Like buying groceries I already have at home, or buying the wrong printer cartridge and losing the recipet (and those cartridges are expensive!). Things like that add up, and by the end of the month, I've spent a hundred or two dollars on things I didn't need or didn't use.

I tend to make impulse decisions when I buy the BIG things and less so with the little things and that gets me into trouble. Especially cause I'll spend like 15 minutes comparing prices on soups, and then spend 2 minutes deciding I need a $400 camera lens. Very bad habit.