Books like Inner Compass
Margaret Silf
Inner Compass is 232 pages, about 4 hours 15 minutes at 250 words a minute.
6 books to read next
How long each takes
Exercitia Spiritualia 4.2 h 
Enneagram II 3.5 h 
God of Surprises 3.1 h 
Your Heart's Desire 3.9 h 
Fuck It 4.7 h 
The Spiritual Exercises of ECK 5.6 h Bar height shows length. Estimated at 250 words a minute.