The way I found my values was to look at my dreams and life goals and ask myself what kind of person I would have to be to reach that stage in my life.
I talk about it in some posts on my blog, take a look if you like.
(I only had to remove two words in that post - aspirations and articles. I think I'm off to a good start; if you have no idea what I'm talking about at the moment, don't worry about it, I am quite mad 
)