On irritation at the conduct of others:

"When thou art offended with any man's shameless conduct, immediately ask
thyself, Is it possible, then, that shameless men should not be in the
world? It is not possible. Do not, then, require what is impossible. For
this man also is one of those shameless men who must of necessity be in the
world. Let the same considerations be present in thy mind in the case of
the knave and the faithless man, and of every man who does wrong in any
way."

Regarding the hypochondriacal tendency he reverts to Epicurus, thus:

"Epicurus says, In my sickness my conversation was not about my bodily
sufferings, nor did I talk on such subjects to those who visited me; but I
continued to discourse on the nature of things as before, keeping to this
main point, how the mind, while participating in such movements as go on in
the poor flesh, shall be free from perturbations and maintain its proper
good.... Do, then, the same that he did both in sickness, if thou art sick,
and in any other circumstances;... but to be intent only on that which thou
art now doing and on the instrument by which thou doest it."

These quotations will serve to show the trend of the reflections of this
remarkable man. After reviewing this epitome of ethical philosophy I might
stop and counsel the worrier to study the thoughts of Marcus Aurelius
and other philosophers, whose practical suggestions are similar,
notwithstanding their diversity of views regarding the ultimate object of
the training. I shall venture, however, to elaborate the subject from the
present view-point, even though the principles of Marcus Aurelius are as
applicable now as they were in the days of the Roman Empire.