“One way to re-collect the mind easily in the time of prayer, and preserve it more in tranquility, is not to let it wander too far at other times: you should keep it strictly in the presence of God; and being accustomed to think of Him often, you will find it easy to keep your mind calm in the time of prayer, or at least recall it from its wanderings.”
Source: Brother Lawrence, The Practice of the Presence of God and The Spiritual Maxims
