"On any team, in any organization, all responsibility for success and failure rests with the leader. The leader must own everything in his or her world. There is no one else to blame. The leader must acknowledge mistakes and admit failures, take ownership of them, and develop a plan to win." - Jocko Willink, Extreme Ownership: How U.S. Navy SEALs Lead and Win
This type of thinking changed my perspective on how to lead, and resulted in significantly more career fulfilment. To me it meant setting direction where none was able to be discerned, assuming nothing, taking honest stock when things don't go to plan and alter the plan when needed. I use this to great effect when I feel like I can’t see a way through.
Define problems with objectivity, implement solutions with empathy. - Adapted from a presentation by Phil Allison, Corporate Edge
To me this means making hard initial decisions based on facts and data then taking account of and minimising their negative impacts on people with creative solutions. This has helped me make better decisions and arrive at ethical and compassionate solutions, ultimately enhancing my own view of my performance.