C.t. Studd said this quote

The “romance” of a missionary is often made up of monotony and drudgery; there often is no glamour in it; it doesn’t stir a man’s spirit or blood. So don’t come out to be a missionary as an experiment; it is useless and dangerous. Only come if you feel you would rather die than not come. Don’t come if you want to make a great name or want to live long. Come if you feel there is no greater honor, after living for Christ, than to die for Him.