Quote by Dallas Willard:

The first and most basic thing that we can and must do is to keep God before our minds. This is the fundamental secret of caring for our souls. Our part in thus “practicing the presence of God” is to direct and redirect our minds constantly to Him. In the early time of our “practicing” we may well be challenged by our burdensome habits of dwelling on things less than God. But these are habits, not the law of gravity, and can be broken. A new, grace-filled habit will replace the former ones as we take intentional steps toward keeping God before us. Soon our minds will return to God as the needle of a compass constantly returns to the north. If God is the great longing of our souls, He will become the pole star of our inward beings.