This is a Swedish proverb with which I agree...
Drag your thoughts away from your troubles...
by the ears, by the heels, or any other way you can manage it.
Today is the tomorrow we worried about yesterday.
Worry never robs tomorrow of its sorrow, it only saps today of its joy.
Troubles are a lot like people - they grow bigger if you nurse them.
Nerves and butterflies are fine - they're a physical sign that you're mentally ready and eager. You have to get the butterflies to fly in formation, that's the trick.
People gather bundles of sticks to build bridges they never cross.
You can't wring your hands and roll up your sleeves at the same time.
That the birds of worry and care fly over you head, this you cannot change, but that they build nests in your hair, this you can prevent.