Cheerfulness, it would appear, is a matter which depends fully as much on the state of things within as on the state of things without and around us.

Cheerfulness in most cheerful people is the rich and satisfying result of strenuous discipline.

Cheerfulness is the friend and helper of all good graces and makes the mind virtuous in the pursuit of virtuous actions.
The only way to get through life is to laugh your way through it. You either have to laugh or cry. I prefer to laugh. Crying gives me a headache.
Cheerfulness keeps up a kind of daylight in the mind, filling it with a steady and perpetual serenity.

A cheerful frame of mind, reinforced by relaxation... is the medicine that puts all ghosts of fear on the run.
Cheerfulness is a very great help in fostering the virtue of charity. Cheerfulness itself is a virtue.
Cheerfulness is the best promoter of health and is as friendly to the mind as to the body.
Cheerfulness, it seems, is a matter of habit that can be acquired and practiced, not just a mood dependent upon circumstances.