How to save money/stop spending money?

I want to get an iphone 5S and at my phone company they are like $585; my paycheck is usually $100 every other friday (if i work enough hours)… How can i keep myself from spending money until i get $600? (i'm not an adult yet, i'm sitll 17 so bills and other stuff isn't a problem}

DO NOT GET THE iphone. It is not worth it to you. It is too expensive… And that is how you stop spending money. {I would be using the money to DATE a girl, not just talk to her on an expensive phone.}

You can always upgrade your phone with another 2 year contract and it will only cost you maybe $100.