The late Vernon Howard was quite a character. If you do a search for him on the net you'll find an interesting story.
This is one of his lessons:
'I would like to attend your class.'
'We meet Saturday at ten in the morning.'
'I usually shop for groceries on Saturday morning, but maybe
I can make it.'
'You won't make it.'
"How do you know?'
'You have just told me what you really value.'"
There is a Way Out, p. 71