Shackleton and Optimism (quote) 29. Mar / quote / No Comments Optimism nullifies disappointment and makes one more ready than ever to go on. Success secrets of Shackleton’s Endurance expedition. ` Related Posts:Use the Wrong Reasons to Achieve the Right Goals [quote]Maybe it was bold determination or simple insanity [quote]Defeat is Not Due to Losses but to the Destruction of the Soul [quote] Jason Entrepreneur, writer, and athlete. #gohardorgohome More here.