Building mental resilience is essential in navigating life's inevitable challenges and is fundamental to living your best life. Our mental strength gets tested all the time, whether as a leader who has to lead her team through a crisis or an individual who has to deal with the adversities that so often beset us in life. Consequently, to beat the odds during hard times, you not only need the proper education, ability, intelligence, focus, perseverance, skill, and talent to get to where you want to be; but you also need mental resilience - a primary key to achieving success in life or business.