Hi MW,
Sometimes I feel that way too. I was diagnosed only a few months ago (I am 40), but have always known there was "an extra joker in the pack". (People often say about different people that they have a few cards missing - I like to think I have an extra joker. It makes the game more interesting- but it can go either way.)
I think getting diagnosed explained a lot of things for me, and I now am less likely to beat myself up about things. There was, and occasionally still is , periods of anger and mourning. But I think, I've had this thing all this time and despite the ignorance surrounding it most of my life, I've done O.K. I have a husband I adore, a few good friends, and a job.
I'd recommend Tony Attwood's book - The complete guide to asperger's syndrome. It has quite a bit on ways to deal with social issues etc. He seems to know his stuff. It is also obvious that he is positive and likes Aspies - and for me this goes a long way. He actually has a list of the positive qualites of Asperger's in his book and (I think) on his website.
Also, I do not know how old you are, but I have heard Luke jackson's book is very good for teenagers. I have not personally read it.
Take care xo