This is me too, except my t does see right thru it. Has since day one. He's made it his goal to rid me of my smile as a defense mechanism. My t has told me the bigger my smile is when I walk into his office, the worse I am typically doing. Same thing happens during the session. If we are talking and get to something tough, my smile gets huge and he knows it's something I don't want to talk about. He starts pushing even harder. Darn t wants me to show real emotions.