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.
Our soul makes constant noise, but it has a silent place we never hear. When the silence of God enters us, pierces our soul, and joins its silent sacred palce, then God is our treasure and our heart. And space opens before us like a fruit that breaks in two. Then we see the universe from a point beyond space.