I don't think the question is "Who am I?" but "Which am I?". You show a lot of different sides of you, and then you seem to wonder which one is the most authentic. It might be interesting to persue what you would do about the other sides if you decided that just one was the real you, or it that's even possible. I like the "everyone's favorite druggie" line, but otherwise this seems a bit disjointed. It's certainly not a poor poem, but you could rewrite it with a bit more flow, or take it out of poem form, and possibly find a more literary synanym for **. Swearing doesn't add to your poem (hypocrite though i am to say that).

who are u? one of the bestest friends me ever had...*smiles*