Been thinking about this one since the thread first appearred. After 35 years of flying (PPL issued 14/12/73), I just cannot say, "I have learned 1)...., 2)...., 3) .... and 4)...."!
I have indeed been fortunate to fly with some highly experienced and very professional pilots (PPLs, CPLs and ATPLs) and instructors in Oz and uNZed. A few are/were legends in the business but most were just blokes (I have only flown with one chick who was any good!) going about their daily occupation or weekend hobby. Anything I am as a pilot I owe to them and it has kept me safe (and my undies clean!) over many hours and many miles of flying in both countries.
I continue to learn every time I front an IR renewal or fly with someone with a broader or different aviation background from my own.
So, for the words of advice -
always be aware, and never stop learning!
Dr 