When it comes to pursuing an endeavor, many get the ball rolling due to motivation. What happens when your motivation dwindles!? What keeps the ball rolling!? Discipline! Sources:Jocko Willink book : Discipline Equals Freedom, St. Martin’s Press, Page 2 and 3. David Goggins and Jocko Willink Discipline compilation: https://m.youtube.com/watch?v=TFG650qI_C0 . Jocko Willink’s brief history: https://en.m.wikipedia.org/wiki/Jocko_Willink