When you imagine some pleasure, beware that it does not carry you away, like other imaginations. Wait a while, and give yourself pause. Next remember two things: how long you will enjoy the pleasure, and also how long you will afterwards repent and revile yourself. And set on the other side the joy and self-satisfaction you will feel if you refrain. And if the moment seems come to realize it, take heed that you be not overcome by the winning sweetness and attraction of it; set in the other scale the thought how much better is the consciousness of having vanquished it.