> I learned a lot from him, and try to follow this example, but I still can't do this today and am humiliated (in a positive way) by this way of living.

Can confirm. Had a friend for awhile (she and her husband moved to NZ, and I barely hear from them now) who had this same "wonder at everything / happy with anything" aspect, and her entire life is practically magic; her father is similar, both in success and vibe.

> am humiliated (in a positive way)

I think the word you're looking for is "humbled"?