This report documents the rehearsing process of the 2014 Graduation Production, Betrayal, and discusses how I ---being an actor--- analyz and understand this script go to figure out the role's disposition and personality, furthermore, to be closer to the character, and how the actor ---I--- becomes this role on stage as the result of my devotion. It also records those conflicts of the personalities between the actor’s and the role’s during the rehearsals, and the way to the solutions. Finally, the author reviews the learning outcomes in the past three years by examining the creation process of Betrayal.