"Without doubt, O mighty-armed, the mind is restless and hard to restrain; but through practice and dispassion it can be controlled."
Modern explanation
As the day quiets, hold this: A restless mind is not a broken mind. Practice, patiently repeated, slowly bends it.
Practical application
Write down three things from today that turned out fine, despite your worry about them.
Reflection question
What did I survive today that I was sure I wouldn't?