Utmost is commonly used as an adjectivemeaning maximum, greatest, or to the highest degree—or as a noun meaning the best of one's abilities or the maximum limit. Upmost is a less common variant of uppermost and means highest or topmost, usually in terms of literal height. ...
My family has always enjoyed My Upmost for His Highest, though I myself have never read it. It does have a powerful message, and I agree that the Do Hard Things concept is far from new! I had a couple of questions that I posted in an older blog post that a few other people expres...