Don't let his mood determine yours! You need to try to detach from it. If he isn't going to do anything, go on without him!
Like after counseling, you can't chase him down to "tell" him to let it go! He has to decide to let it go on his own. Every time you "tell" him anything, and you might not even think it is "telling", he sees you as a controlling W. Reality doesn't enter into it, it is his perception!
As far as the C's advice, he is almost certainly not going to follow it immediately. Again, he doesn't want to lose control. He is going to wait, and think about it. Then, IF he decides it is a good idea, he might follow it, and it will probably be HIS idea!
Back to the original point, detach your emotions from his, and act "as if", if you need to. Don't let him pull you down into his drama!