snap back

there was a missionary that always had d rubber band around his wrist.   finally i asked him why.   he said that when things were tough and he was having a hard time or beginning to whine, he would pull it and snap himself.   it reminded him that things could be worse and that the painful times only last a little while.  just like the snapping of a rubber band.   it really hurts for a second but then it's gone with in moments.   it doesn't seem so bad once it's over.