Send Me In Coach!

I have tremendous respect for the ancient schools of philosophy, particularly the Greek and Roman ones, where children (albeit, of wealthy parents and exclusively male) were sent, or from which tutors were sought, in order to develop their argumentative and speaking skills; and generally to learn how to live a better life.  On the other hand, nothing annoys me more than the unmitigated gall of a thirtysomething to build a website and hang out a shingle as a 'Life Coach'.  Are they actually much different, one from the other?  That's what I've been chewing on today.