Verb
walk the talk (third-person singular simple present walks the talk, present participle walking the talk, simple past and past participle walked the talk)
(idiomatic, US) To perform actions consistent with one's claims.
I think it's because most of us talk one way and live another. There are a few people who truly, truly walk the talk. Olympia Dukakis
I play guys who are willing to go really far. If the dung really hits the fan, I don't know if I could walk the talk. But anyone who isn't willing to die for his convictions isn't worth living. My characters, no matter how demented they are, they have their convictions. Elias Koteas