Alcohol.

[Grizzly]

I'm about the same age as you OP. With me, I don't have to drink, I'm not addicted in any way and I doubt I ever will be. When I do drink, I never get so "wasted" that I wake up in the morning with a hangover.

The best thing you can do it be sensible about it. Seeing as you are a bit younger than me, I presume you walk around the streets drunk with your friends? Whenever I do this, I always take a two litre bottle of water out with me. If I start to feel that I've had too much then I start sipping on the water. This will help to sober you up as it dilutes the alcohol and also combats the dehydration that you will have the next morning.

Basically, just be sensible about it.

Drinking water WILL NOT do anything to help. The only thing it will help is the dehydration that causes hangovers. It won't help sober you up at all. Only time will help sober you up.

@ OP. You don't have a drinking problem my friend, other than you are underage. If you keep drinking the rate you are though you'll probably end up addicted by 18-24. Do you drink while you're with your friends? If so, just don't go out with them if you don't have the willpower to turn downt he peer pressure of drinking. Drinking is fun, it can be at least. I drink every night (1-2 drinks). It's been proven that people who have 1-2 drinks every night live longer than those that abstain. Friday and Saturday I'll drink some more to get a good buzz. But I've been drinking for about 10 years now, so I know where my limit is. You're still exploring your limit. Give you a hint, drink 3 drinks, wait 30 minutes, drink another, wait 15 mins, drink another wait 30. Depending on your size and sex you should be about your limit for a 15 years old that hasn't been drinking for years.

edit: AA and NA will take anyone any age. It's not about illegality of doing the drug, it's about helping you get over any issues you have.