If you read books about asperger's, like tony attwood as suggested by one-a-n, and multicoloured mayhem by jacqui jackson, and look at the autism related web pages you will probably heve a pretty good idea if you do have it.
There is the aq quiz that can be helpful too.
If you think you have asperger's, you wouldn't need a diagnosis to try out some of the self help techniques, they are unlikely to do any harm whether you have asd or not (in my opinion)
http://www.aspergernauts.co.uk/asperger ... advice.php
I have noticed there are a lot of people who post some very helpful replies on the forums here too.
It may be useful to tackle each difficulty seperately too, one at a time?