Here is help on the unceasing inward prayer  that A.W. Tozer wrote about that is so vital.  'Light Heart' has compiled this information that can be obtained at his web site.  My only regret is that I did not learn of the Practice of God's Presence long ago instead of perhaps 30 or so years ago.

www.PracticeGodsPresence.com

Reflections On
Practicing God's Presence
Little Books To Print
Each Book Is Approximately 12 Pages
written by Light Heart


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"Let us think often that our only business in this life is to please God.  Perhaps all besides is but folly and vanity."
 
   ... Brother Lawrence

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        One of the purest souls ever to live on this fallen planet was Nicholas Herman, known as Brother Lawrence. He wrote very little, but what he wrote has seemed to several generations of Christians to be so rare and so beautiful as to deserve a place near the top among the world's great books of devotion. The writings of Brother Lawrence are the ultimate in simplicity; ideas woven like costly threads to make a pattern of great beauty.

... A.W. Tozer