To make anything a habit, do it; to not make it a habit, do not do it; to unmake a habit, do something else in place of it.
EpictetusIt was the first and most striking characteristic of Socrates never to become heated in discourse, never to utter an injurious or insulting word -- on the contrary, he persistently bore insult from others and thus put an end to the fray.
EpictetusOther people's views and troubles can be contagious. Don't sabotage yourself by unwittingly adopting negative, unproductive attitudes through your associations with others.
Epictetus