I need to save my money!!!?

this year im buying like $500 worth of stuff i want, and i have to save for a car...for a holiday to alis springs with a friend so its all my money, im probs going to be spending money on outings with friends and i need to save money for when i move out to pay rent and etc..i get on average $110 a week and i know it wont be enough for what i want how am i ment to get more money withough relying on the chances of winning the lotto.. i cant reallly work any more