I'm an accountant. I used to live paycheck to paycheck in my 20's before I went back to school. Go out all the time, blow it. I look back now and go, "damn, I could have SO much money in the bank"....
BUT, I enjoyed it, so I don't totally regret it. But the reason accountants are notoriously cheap, is that the understand the beauty of compound interest.
For example, take your $675. If you got 6% on that money, in 20 years, it'd be worth a little over 2k.
If you put that $675 in an account and put $100 away each month for the next 20 years, you'd have almost 50k. And the beauty of it is that you have only contributed $24,675.
6% is an arbitrary percentage right now, but the point is there. I started getting to the point where just like someone else in this thread, I'd say, "ooo, I want that"...then I'd wait a few days and odds are, I'd forget about it....
I want to mod the crap out of my jeep, but I also think, damn....that $5k is going to be worth how much when I'm 60?
I always here about the live for the now, etc..but the whole country is doing that, and frankly, I don't want to be the one who's 65 and still busting my *** because I didn't save. I enjoy the things I do, I just dont' do EVERYTHING I'd like to....big whoop.