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Others have said ...
Worry has been defined as a small trickle of fear that meanders through the mind until it cuts a channel into which all other thoughts are drained.
Worriers spend a lot of time shoveling smoke.
Worry is like a rocking chair, it will give you something to do, but it won’t get you anywhere. - Vance Havner
No one ever gets far pacing the floor.
You cannot change the past, but you can ruin a perfectly good present by worrying about the future.
Worry is interest we pay on trouble before it is due.
Worry is unbelief parading in disguise. When worry knocks on the door, send faith to open it; and you will find that no one is there.
If you treat every situation as a life and death matter, you'll die a lot of times. - Dean Smith
Worry, doubt, fear and despair are the enemies which slowly bring us down to the ground and turn us to dust before we die. ~Attributed to Douglas MacArthur
Love looks forward, hate looks back, anxiety has eyes all over its head.
People gather bundles of sticks to build bridges they never cross.
Worry often gives a small thing a big shadow. - Swedish Proverb