It is not enough to have great qualities; We should also have the management of them.
One painful duty fulfilled makes the next plainer and easier.
The most precious of all possessions is power over ourselves.
Self-discipline is crucial to a simpler, more contented life.
There is only one sort of discipline, perfect discipline.
Cultivate within yourselves the mighty power of self-discipline.
One discipline always leads to another discipline.
The references you do not verify are the good ones.
Do not let circumstances control you. You change your circumstances.