Never compare yourself to another.
You may be unconquerable, if you enter into no combat in which it is not in your own control to conquer. When, therefore, you see anyone eminent in honors, or power, or in high esteem on any other account, take heed not to be hurried away with the appearance, and to pronounce him happy; for, if the essence of good consists in things in our own control, there will be no room for envy or emulation. But, for your part, don't wish to be a general, or a senator, or a consul, but to be free; and the only way to this is a contempt of things not in our own control.
Do not give in too easily to provocation.
Remember, that not he who gives ill language or a blow insults, but the principle which represents these things as insulting. When, therefore, anyone provokes you, be assured that it is your own opinion which provokes you. Try, therefore, in the first place, not to be hurried away with the appearance. For if you once gain time and respite, you will more easily command yourself.
Never give in too easily to pleasure.
If you are struck by the appearance of any promised pleasure, guard yourself against being hurried away by it; but let the affair wait your leisure, and procure yourself some delay. Then bring to your mind both points of time: that in which you will enjoy the pleasure, and that in which you will repent and reproach yourself after you have enjoyed it; and set before you, in opposition to these, how you will be glad and applaud yourself if you abstain. And even though it should appear to you a seasonable gratification, take heed that its enticing, and agreeable and attractive force may not subdue you; but set in opposition to this how much better it is to be conscious of having gained so great a victory.
The one who hurt you, has hurt himself first.
When any person harms you, or speaks badly of you, remember that he acts or speaks from a supposition of its being his duty. Now, it is not possible that he should follow what appears right to you, but what appears so to himself. Therefore, if he judges from a wrong appearance, he is the person hurt, since he too is the person deceived. For if anyone should suppose a true proposition to be false, the proposition is not hurt, but he who is deceived about it. Setting out, then, from these principles, you will meekly bear a person who reviles you, for you will say upon every occasion, "It seemed so to him."
Choose the ‘better handle’ in everything.
Everything has two handles, the one by which it may be carried, the other by which it cannot. If your brother acts unjustly, don't lay hold on the action by the handle of his injustice, for by that it cannot be carried; but by the opposite, that he is your brother, that he was brought up with you; and thus you will lay hold on it, as it is to be carried.
The condition and characteristic of a vulgar person, is, that he never expects either benefit nor hurt from himself, but from externals. The condition and characteristic of a wise man is, that he expects all hurt and benefit from himself. The marks of a proficient are, that he censures no one, praises no one, blames no one, accuses no one, says nothing concerning himself as being anybody, or knowing anything: when he is, in any instance, hindered or restrained, he accuses himself; and, if he is praised, he secretly laughs at the person who praises him; and, if he is censured, he makes no defense. But he goes about with the caution of sick or injured people, dreading to move anything that is set right, before it is perfectly fixed. He suppresses all desire in himself; he transfers his aversion to those things only which thwart the proper use of our own faculty of choice; the exertion of his active powers towards anything is very gentle; if he appears stupid or ignorant, he does not care, and, in a word, he watches himself as an enemy, and one in ambush.