This paper explores the Mental Toughness model in a coaching process. Mental Toughness, a narrow personality trait, recently emerged as a significant factor in defining and measuring individual’s mind-set and attitude. Authors argue that one of the key elements contributing to building successful coaching rapport with a coachee as well as to set a coachee onto a coaching journey is to understand the mental toughness level of the client. This paper will also explain what Mental Toughness is and its applications to all walks of life.