Barbara, how do you know he is an amazing man, experience?
I taught English as a Foreign Language for 35 years and never came across a course that was a panacea. It is just horses for courses, so to speak there is NO method which really works. However, individuals may prefer one approach to another, though at heart they are all the same - listen, understand and repeat- which does not really help you in conversation situations or to produce utterances beyond universal groans and squeaks.
The best motivator is simple need, with the skills to learn which not everyone has. Or, get an intimate lady/gentleman/ bisexual, transsexual/ unknown sexual friend who will make you improve by leaps and bounds. This is why Norman is so polyglot! (No, Sweets, not with a parrot).
Too thick for a PhD!