Self discipline is that which, next to virtue, truly and essentially raises one man above another. Joseph Addison
Without discipline, there’s no life at all. Katharine Hepburn
With self-discipline most anything is possible. Theodore Roosevelt
If we don’t discipline ourselves, the world will do it for us. William Feather
I think of discipline as the continual everyday process of helping a child learn self-discipline. Fred Rogers
Self-discipline, as a virtue or an acquired asset, can be invaluable to anyone. Duke Ellington
Disciplining yourself to do what you know is right and important, although difficult, is the highroad to pride, self-esteem, and personal satisfaction. Brian Tracy