Purge your mind of all aimless and idle thoughts, especially those that pry into the affairs of others or wish them ill.
Marcus Aurelius... Allow yourself a space of quiet, wherein you can add to your knowledge of the Good and learn to curb your restlessness. Guard also against another kind of error: the folly of those who weary their days in much business, but lack any aim on which their whole effort, nay, their whole thought, is focused.
Marcus Aurelius