There is no effort that we can make to still ourselves. True stillness comes naturally from moments of solitude where we allow our minds to settle. Just as water seeks its own level, the mind will gravitate toward the holy. Muddy water will become clear if allowed to stand undisturbed, and so too will the mind become clear if it is allowed to be still.
The last time I saw Fr. Bede, I asked for his blessing and one final word of advice.
He held my face in his hands and then said, "Pray, pray always!"
And he went back to his prayers.