HOLY SHIT, you'd spend 750$ in a weekend of drinking?!?! wow, the most my bar tab has ever been was 125$ and that's b/c it was padded. Do you buy drinks for everyone at the bar?
On Topic. You sound alot like me a few years ago. i had a great job and lived at home with my folks, i dont know where my money went. These days, things have changed im much better off. i would say go with Ken's suggestion, when your able to track where your money goes your able to consciencely (*sp?) spend it the next time. Go a week or two spending like you have been, then look back at what your spending and realize where you can tighten up. You'd be surprised how much money you can save by the little things.