Original sentence: Because almost all of their time is otherwise occupied, other communication is limited.However, a missionary may use preparation day to correspond with any person that is resident outside of the boundaries of the mission.Missionaries are encouraged to write a letter to their parents weekly.Missionaries are provided with a free church e-mail account to correspond with their family, but they may only access their account on preparation day using a computer in a public location, such as at a public library or an internet café.Missionaries do not go on vacation and are generally only permitted to telephone their parents on Christmas Day and on Mother's Day (some mission presidents also allow missionaries to telephone their parents on Father's Day)
Edited sentence: As almost all of their time is spent proselyting and studying, other communication is limited.It is a tremendous sacrifice to be a missionary, however virtually all missinaries consider it a great privelege and an experience that strengthens them throughout their lives.Missionaries are encouraged to write home weekly (preparation day) to their parents and family.Missionaries do not go on vacation and only call home (except in cases of emergency such as death in the family) on Christmas and Mother's Day.The term "lose themselves" refers to the agreement the missionary has made to leave behind all personal affairs and focus on the work.This is done to help missionaries "lose themselves" in the work