Good point. I think his method helps identify the problem within your consciousness, then you can choose from the different solutions:
-Improve/Control that trait in yourself
-Release/Express that trait in yourself (can be counter productive to your overall goals, though)
-Attempt to change/control that trait in the other person
-Learn to put up with the trat in the other person
Obviously, the first two will usually be the best choices. They'll allow you to check in with yourself and decide whether it's a trait that suits your or not. Embracing your shadows is important, but I don't know if ALWAYS the best choice.