Read as a post here . (Commented as below).
Milton Erikson, an American psychiatrist and writer, apparently referring to the "Confusion Technique" used in hypnosis, says , ""Until you are willing to be confused about what you already know, what you know will never become wider, bigger or deeper." .
They throw pebbles
In your pond
The ripples, spread
like your confidence,
No "technique" to it ...........