Part of the power of pride’s duplicity is in its parasitic nature: it latches on to genuinely good things, gifts from God, and pride so maneuvers and blends into the surroundings that we are deceived into believing that confessing certain forms of pride would be to confess virtues and gifts and truth. And so we let the tape worm grow for fear of poisoning the body. We refuse to remove the leech out of a blind love for arms and legs.
Excerpt from The Dark Wine of the Spirit. Check out the whole post for some really helpful thoughts on pride verses true joy.