and screw going in your sleep, like everyone always wants. that's no good, you can't see it coming. that's like dying of a stubbed toe. no good. ideal would be something where it's painless until right at the very end, and the doctor comes in and says "well i'm sorry to inform you, but you have 1 year to live." this is the call to action! right here, they're telling you to get your shit done, you have no excuse to put it off til tomorrow because your tomorrows are now quantified, and you have no consequences for whatever you want to do because, pfft, dead! did you get arrested? oh well, dead soon! get AIDS? too late, already doomed!
so basically, you take care of everything you really want to take care of, spend some quality time with your loved ones, spend all your extra time doing mushrooms and whores, and then when you're at 11 months (just in case your doctor forgot to carry the 1, or something), go find yourself the tallest building you can, jump off, set yourself on fire halfway down, and land on a big pile of kitchen knives and gunpowder. KAPOW instant gory awesome death, you go out like a badass without having to suffer. because really, most times if you want to be badass it will hurt: say you want to go out by going to a KKK rally dressed like black jewish jesus. yeah that'd be cool, but it will probably suck right at the end when they're beating you to death. wouldn't you rather go flying off a building and then explode? that's totally the way to go.
or another fun way would be like that one dude, steal a tank. a fucking tank!! go driving around town, run over some cars, shoot stuff, all that good shit. because you're in a tank!! and just go have fun at that, until some cop heroically decides that protecting people's property is more important than human life, and he runs up and shoots you in the head. and then footage of it can be played on tv forever and ever. or you could drive your tank off the really tall building, that'd be good too.