How Much Sleep Do I Actually Need?

I am tired. How much sleep do I actually need? I wake up early wrecked everyday. No amount of coffee or energy drinks give me energy! No matter how late I stay up I wake up to early. Is it because of worry? I have no problem getting to sleep cause i'm always tired the problem is staying asleep. Someone suggested that I take a sleeping pill to help stay asleep but i'm not sure about that. Don't want to sleep for days either. If I could get a good nights sleep without waking up to early it would help. So if you have any ideas let me know. Thanks.