Is Chris Langan successful?

After seeing Chris Langan on 1 vs. 100 and reading about him in The Outliers, I can say that he is successful. 
Success in my own words is when someone is happy with their lives, not nessecarily rich or famous. As long as a person is content with what they have and don't want much more, to me it is considered success. 
To me, my meaning of success applies to Chris Langan. He has a simple life with his wife, farm, and easy job, and that's enough to be successful. Even though he's not getting into jobs that he can use his high IQ in, it's okay because there are plenty of other people out there that can do those jobs; no one needs to depend on Chris. 
So, in my opinion, Chris Langan is a successful man.