I'm also 14 and I already have a six pack. It took me about a year to get but it was worth it. Anyways, the three main things to do to get a six pack are diet, strength, and cardio, diet being the most difficult and important to follow. You might have heard people say "hey you're young, you can eat anything that you want" but that statement is WRONG. Every successful six pack is backed by a healthy diet. Healthy diet meaning lots of fruits and vegetables that supply fiber, antioxidants, vitamins, and lean white meats (fish and chicken), and a regulated amount of carbs. It's also important to lay off the SNACK food and CANDY. Exercise is also necessary to gain a six pack. Cardio (running, sports, swimming) should be done at least 3 times a week and so should strength (core workouts). If you make an effort to do these things regularly, you'll have a six pack in no time.