I signed up on these forums to respond to your post. Here is my recomendation....since you have already taken intro flights. Pickup some books...i remember using Gleim's stuff for my private and instrument. Start to study the private and pass it. If you have enough motivation to get through the worst part (well..at least i think so) of not being in the air and going through books over and over again only to pass a test to be able to get your private..right on! The PPL FAA Knowledge Test book is cheap..i think like 15 to 20 bucks. Buy it...see if you can get through it and pass the test. If you can hang through all of this and pass it right on...keep flying! Plus your instructor will be excited that he doesnt have to worry about you passing it and only the flying aspect on your checkride once he feels you are ready.
You are still young...the world is yours. I wish I would have had my PPL at your age... all the girls I could have taken on REALLY hot dates
. Hey girl..whats up..wanna get some dinner in Vegas tonight? LOL