I wrote this letter recently to a student who told me he was struggling with stress while serving as a missionary for the LDS church. This was my reply:
It’s interesting that you wanted to know about missionary stress. I’m actually writing a book/workbook for a mission in Michigan who wanted some help for their missionaries. And I also have a son who is in Santiago, Chile, on his mission, and is experiencing some stressful times. The reason I say this is just to let you know that what you’re going through isn’t unusual, nor is it unique to you.