Worry is one of two components of anxiety (the other being emotionality). Worry refers to negative self-talk that often detracts the mind from focusing on the problem at hand. Emotionality refers to physiological symptoms such as sweating, increased heart beat and raised blood pressure.
- Don't worry, be happy!
- What's the use of worrying?
It never was worth while,
So, pack up your troubles in your old kit-bag,
And smile, smile, smile.
- George Asaf [George H. Powell], 1st World War song: Pack up Your troubles in Your Old Kit-bag.
Dictionary of Burning Words of Brilliant Writers (1895) 
Quotes reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895).
- Anxious care rests upon a basis of heathen worldly-mindedness and of heathen misunderstanding of the character of God.
- Alexander Maclaren, p. 42.
- Despatch necessities; life hath a load
Which must be carried on — and safely may;
Yet keep these cares without thee; let the heart
Be God's alone; and choose the better part.
- Henry Vaughan, p. 43.
- He that taketh his own cares upon himself loads himself in vain with an uneasy burden. I will cast all my cares on God; He hath bidden me; they cannot burden Him.
- Bishop Hall, p. 43.
- He who climbs above the cares of this world, and turns his face to his God, has found the sunny side of life. The world's side of the hill is chill and freezing to a spiritual mind; but the Lord's presence gives a warmth of joy which turns winter into summer.
- Charles Spurgeon, p. 43.
- I met a brother who, describing a friend of his, said he was like a man who had dropped a bottle, and broken it, and put all the pieces in his bosom, where they were cutting him perpetually.
- Henry Ward Beecher, p. 43.
- Why art thou troubled and anxious about many things? One thing is needful — to love Him and to sit attentively at His feet.
- François Fénelon, p. 43.
- I have no cares, O blessed Will!
For all my cares are Thine;
I live in triumph, Lord, for Thou
Hast made Thy triumph mine.
- Frederick William Faber, p. 44.
- Most men call fretting a minor fault, a foible, and not a vice. There is no vice except drunkenness which can so utterly destroy the peace, the happiness of a home.
- Mrs. H. F. Jackson, p. 254.
- However nervous, depressed, and despairing may be the tone of any one, the Lord leaves. him no excuse for fretting; for there is enough in God's promise to overbalance all these natural difficulties. In the measure in which the Christian enjoys his privileges, rises above the things that are seen, hides himself in the refuge provided for him, will he be able to voice the confession of Paul, and say, "None of these things move me."
- S. H. Tyng, Jr., p. 254.
- Worry is interest paid on trouble before it falls due.