this may have been posted by us before, but while trying to motivate my own words to leave my mind and jump onto the page, i found myself on this paragraph again. it's in an old favorite, "stepping heavenward," by elizabeth prentiss.
"and now if you ask how you may know that you have truly consecrated yourself to him, i reply, observe every indication of his will concerning you, no matter how trivial, and see whether you at once close in with that will. lay down this principle as law - God does nothing arbitrary. if He takes away your health, for instance, it is because He has some reason in doing so; and this is true of everything of value; and if you have real faith in Him, you will not insist on knowing the reason."