Whatever attitudes we use toward ourselves, we will use on others

Whatever attitudes we habitually use toward ourselves, we will use on others, and whatever attitudes we habitually use toward others, we will use on ourselves. The situation is comparable to our serving food to ourselves and to other people from the same bowl. Everyone ends up eating the same thing--we must examine carefully what we are dishing out.

-Bhante Henepola Gunaratana
Eight Mindful Steps to Happiness