You cannot perform or externalize your vanity as overtly as Bieber did without again emphasizing to the world you are a jerk.
Then live these in your mind, making no room for unclean thought, and you will externalize them in your body.
You express yourself in your ideas and thoughts, which you try to externalize materially.
Ideas express the implicit will of the human being to externalize them (what Marcuse called "the imperative quality" of thought).
Gora Dwight had told him that he must learn to "externalize his emotions," and he felt that here was the supreme opportunity.
A change of will can always manifest itself in action but it is very difficult to externalize convincingly a mere change of heart.