Meditation 10.29-30
Marcus AureliusMeditationsBook 10.29
29. At the time of each separate act, stop and ask yourself whether death is to be feared because you are deprived of this.
30. When you run against some one's wrong behaviour, go on at once to reflect what similar wrong act of your own there is; for instance, to esteem money or pleasure or glory as goods, and so on with each kind. For if you attend to this, you will quickly forget your anger, when it occurs to you at the same time that he is compelled, for what else can he do? Alternatively, if you can, remove what in him is subject to compulsion.