I don't know you talk about killing yourself like as it was nothing. Seriously most teenagers do it, because they see no end, there are no choices and the easiest way to deal with problems and pain is ending their life.
In your case, I don't see anything HUGE that it's affecting you, and you also don't seem serious about it, like "hello everyone, I just wanted to let you all know that I'm going to kill myself in 2014, no big deal. For the time being, I'll have fun for as much time I have", that's what I think when I read you suicidal posts.
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OK, I stopped being a grinch, I very much agree with Riclo's post, if you kill yourself, sure, your problems are gone, but life is all you have, anything good you had or anything you liked will be gone as well, and I'm sure your life is not as shitty as you make it sound. You are stressed for the future? who told you that you have to be the next Mark Zuckerberg to be someone in life? you can live a very modest life, humble but happy, happyness is all the matters. This stress you are talking about is stupid IMO, because the stress of being an adult is more stressful than that, you just have to know how to handle it, and always be around nice possitive people.
That's all I have to say, I have tons of problems as well, you have no idea, and I never dared to end my life, because there is always a future waiting for me.