I rarely believe them, but i am getting better at responding with a simple, 'thank you.' People don't have to say nice things and i figure the least i can do is acknowledge the sentiment, even if i don't believe it.

I've noticed that i actually feel a moment of connection with my T when i stop to thank him for something nice he says, instead of just brushing it off or rushing right by it. And we do talk about how I don't believe a lot of his nice words (and why) - but how that doesn't make them any less true from his side.