The ancient texts knew this restlessness. They called it rajas — the quality of agitation that pulls the mind in every direction at once. Anxiety is not a modern invention; it is what happens when the mind loses its ground. The Bhagavad Gita, the Upanishads, and Patanjali's Yoga Sutras each offer a different way back to stillness — not by suppressing the mind, but by understanding what the mind actually is.
Yoga citta-vritti-nirodhah
"Yoga is the cessation of the fluctuations of the mind."
— Yoga Sutras of Patanjali, 1.2
Manah-prasadah saumyatvam maunam atma-vinigrahah
"Serenity of mind, gentleness, silence, self-restraint — this is called mental austerity."
— Bhagavad Gita, 17.16
Chapter 9 of the Bhagavad Gita opens with Krishna calling his teaching the "king of secrets" — then spends thirty-four verses insisting it requires nothing more than sincerity: a leaf, a flower, a little water, offered honestly, by anyone, starting today.
Bhagavad Gita