Dr. Les Parrott in his book Shoulda Coulda Woulda tells an old legend about three men. Each man carried two sacks--one sack tied in front of his neck and the other sack resting on his back.

When the first man was asked what was in his sacks, he said, “In the sack on my back are all the good things friends and family have done for me. That way they’re hidden from view. In the front sack are all the bad things that have happened to me and all the mistakes I’ve made. Every now and then I stop, open the front sack--containing all the bad things that have happened to me--take the things out, examine them, and think about them.” Because he stopped so much to concentrate on all the bad stuff in his life, his pace was slow and he made little progress.

When the second man was asked about his sack…