Diversity?

I am taking a grad class on diversity. I never really thought much about adversity because I figured that I wasn't racist. I have friends from all over the world who are different colors than I am. I am even married to a man who is much darker than me. Obviously race isn't an issue for me, but what I am realizing is that I do hold some ugly prejudices in my heart. Diversity is so much more than race! How do I treat people who are different than me based on socio-economic status, weight, appearance, job title, age? It's food for thought.