I'm TERRIBLE with spending money.
I had $1000 at the beginning of the school year and it's all gone now.
It's not so much that I buy a lot of stuff for myself, but when I'm with other people, I can be a little too generous with my money, and impulsively buy a lot of stuff I don't need or for other people. This includes giving people rides (I'm one of the only ones out of my friends that drives yet and has a car).
So! I'm paying for it now. I work a part time job, make minimum wage, and pay for my own gas. My dad doesn't help, so I'm kind of paying the bill for the careless lifestyle I'm trying to wean off of.