James Alexander Thom, Nuggets
Once armies carried cannonballs with them, afraid they would meet the enemy somewhere and have nothing to shoot at it. In terms of specific gravity, grudges are about as heavy as cannonballs. But it makes little sense to carry them. Most likely, the "enemy" is unaware of your enmity, and surely would be surprised to learn that you've been stalking him with a cannonball in your pocket. So examine your grudges. Do what armies do when hostilities are over: unload the cannonballs and stack them on the courthouse lawn. Then marvel at how much easier it is to get around.