I'm 33. Reading your post sounded eerily familiar. I have experienced almost everything you mentioned. The social "drain". That clarity of thought, which doesn't come in word form,and cannot easily be written, only noted, in hope that others might be able to understand. Its amazing what some cannibis and amphetamines, can do for the mind. I suspect, that Einstein had known this, as well. I think you might know what I mean.
Keep your head up. You're not alone, completely, and I think you will find this site interesting. It provides some info that isn't really accessible elsewhere. 
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Those who speak, don't know.
Those who know, don't speak.