As for pursuit of happiness, I really can’t think of anything to symbolize that. I like this story involving it: “My mom always told me to be happy in life, no matter what I choose to do. In school, the teachers asked what I wanted to be when I grew up. I said happy. They said I didn’t understand the question, I said they didn’t understand life.”
Besides that, since I can’t think of anything for it, I’m thinking of something along the lines of the Taurus sign. Maybe a tribal tattoo with the sign in it.