This is a lesson that Frank Laubach needed to learn when working among the Muslims.
in 1955 in founded Laubach Literacy. Eventually this became ProLiteracy Worldwide. He thought that literacy and world peace were linked, and travelled extensively talking about the needed for people to be literate, promoting peace through literacy.
His conversations with God helped to formulate his approach to working among the Muslim people, gaining their trust and acceptance. His literacy approach was very popular in the Philippines and from there spread through several countries.
He wrote many books and pamphlets. One of his pamphlets encouraged people to spend one second of every minute focused on God, thereby encouraging people to always be in an attitude of prayer. He wanted people to always be focused on God. He detailed these in his Letters by a Modern Mystic.
"His work touched 103 countries, involved 313 languages, and taught 100 mission people to read. His fifty-six books promoted both literacy and the intense spirituality which marked his life. In 1984 a U.S. postage stamp in the Great Americans series was issued in his honor".
Sources:
Missionary Hero stories (book)
Wiki:
Boston University:
Dallas Willard: