Discipline in essence, is consistency  of action – consistency with values, consistency with long term goals, consistency with performance standards, consistency of method, consistency over time. Discipline is not the same as regimentation. Discipline is not the same as measurement. Discipline is not the same as hierarchical obedience or adherence to bureaucratic rules. True discipline requires the independence of mind to reject pressures to conform in way incompatible with values, performance standards and long term aspirations. For a 10Xer the only legitimate form of  discipline is self-discipline, having the inner will to do whatever it takes to create a great outcome, no matter how difficult.

Jim Collins from ‘ Great by Choice’