"Act today in such a way that you need not blush tomorrow." St. John Bosco

This is another way of saying that our actions have consequences, some eternal. Adam and Eve sought the temporary satisfaction of eating the fruit of knowing good and evil. The eternal consequences were devastating: lost relationship with God. How often we act without thinking of the real effects of our actions! The saints teach us to keep the final judgment in mind when we act, so that this present decision will receive the rewards of eternal life and not the condemnation of eternal alienation from God. In other words, keep eternity before you, rather than just the present moment.