Funnily enough, that's how I realised I was AS too.... in getting my daughter diagnosed, realised I had similar traits. Much more research later and I'm going back to be officially diagnosed (I hope). Read as much as you can on the subject, there are some very good books out there - pm me if you want any suggestions.
In reading up about AS, I've helped myself understand myself better (how and why I do things) and also improved my marriage as my husband will also read relevant bits and then we'll have a discussion - which is useful as he usually identifies a behaviour before I do (he's NT).
Good luck.