I'm always hungry I can never eat enough what can I do about it?

First be checked. Make sure that you have no thyroid disorder, parasite or health problem. If you do not then you are a very lucky individual and enjoy life.
Eating Disorder. Appetite for food is regulated by a number of neurohormones, as well as your blood sugar level, and feedback from your stomach. A number of medications can affect your appetite, making it seem like you are never satisfied, as well as a number of problems with your stomach, or with your brain (lack of feedback). See your doctor to start to sort out the problem before you become obese.