Here is a thought worthy to ponder, and a discipline worthy to practice, excerpted from Dallas Willard‘s The Great Omission:

Our part in practicing the presence of God is to direct and redirect our minds constantly to him.  In the early times 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…

Soon our minds will return to God as the needle of a compass constantly returns to the North.