Cultivate these, then, for they are wholly within your power: sincerity and dignity; industriousness; and sobriety. Avoid grumbling, be frugal, considerate, and frank; be temperate in manner and speech; carry yourself with authority.
If you are pained by external things, it is not they that disturb you, but your own judgement of them. And it is in your power to wipe out that judgement now.
Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.
Because a thing is difficult for you, do not therefore suppose it to be beyond mortal power. On the contrary, if anything is possible and proper for man to do, assume that it must fall within your own capacity.