Push your limits, fight difficulties in group, overwhelm your fears, apply modest servant leadership, fight bureaucracy, find purpose, F3EA, avoid limiting rules that will always be used as an excuse, a decision now is always better than the best decision later, mistakes and failures are acceptable since you can learn from them, your allies doesn't think like you, motivation through inspiration and confidence, "the purpose of life is a life with purpose", General MacChrystal

http://fourhourworkweek.com/2015/07/10/general-stanley-mcchrystal-on-anti-war-americans-pushing-your-limits-and-the-three-military-tests-you-should-take/