I'm glad, because that's the pressure that's on you, no doubt, in finishing this dissertation. Life is funny. Your whole self worth is not this. It's a transactional relationship. Your committee is hopeful, so you should be. Get the shit done and get on with your life, which has many surprises in store for you, don't I know? You're definitely worthy. Nobody flunks the dissertation stage, so just write the thing. You'll be fine. Trust me, if your life is anything like mine, there is a life beyond the dissertation that is far more challenging and will wipe the glue right off your ass.