having complete self control

Why did Yosef wait so long to reveal himself, and what does the pasuk mean when it says he could not restrain himself "in the presence of all who stood before him"? The Kli Yakar sees a careful plan behind every step of the delay. That opens the real question for us: what does it take to stop before acting on impulse? A gadol caught in a moment where every instinct says to react gives a picture of that control when nobody is watching. Think of it the next time your own temper rises.