Your ability to generate power is directly proportional to your ability to concentrate.
Your ability to concentrate is directly proportional to your ability to eliminate distraction.
Distraction is created by mismanaged commitments.
Your ability to refocus, rapidly, on the right things at the right horizon at the right time is the master technique of knowledge work athletics.
Perspective is your slipperiest and most valuable commodity. Therefore methods for maintaining perspective are your most important tools.