Why do I have terrible spending habits and how can I fix them?

[Jagger341]

Whenever I have money, anytime at all, I feel the need to always spend it on many things each and every day. Whether it's food, games, anything at all. I don't know why this is, but I need to fix this because I'm trying to save $150 a month so I can be ready to move out in January, and I'm already down to about $200 after having $550 leftover from last week after helping my dad and stepmom out with bills in the house.