You will find yourself refreshed by the presence of cheerful people. Why not make earnest effort to confer that pleasure on others?...Half the battle is gained if you never allow yourself to say anything gloomy.
Soon after a heart-wrung decision, something inevitably occurs to cast doubt on your choice. Holding steady against that doubt usually proves your decision.
Those people work more wisely who seek to achieve good in their own small corner of the world ... than those who are forever thinking that life is in vain, unless one can ... do big things.
True happiness, we are told, consists in getting out of one's self, but the point is not only to get out; you must stay out, and to stay out, you must have some absorbing errand.