Transference is really important because the way you relate to people outside of T will mirror itself with your T. Your T can represent anyone to you. For example, if engage in a lot of black and white thinking and feeling, you may do the same with your T. But with your T, you will begin to learn that you can hold multiple feeling for him and he won't go anywhere. If you transfer anger onto your T, you will see that he won't react the same way someone else would. You can work through the anger and learn tons and tons of stuff about yourself. I transfer onto my T all the time. I even transfer myself onto T (telling him that he is frustrated with me, when I'm really frustrated at myself).