In my early days as an up-and-comer, I was selected to referee some very lucrative games, including provincial finals that stretched for 5 years in row, 4 years doing medal games.
I showed enthusiasm that had left many of my local colleagues behind. Coupled with the first 2-3 years of success mentioned in the first paragraph, I had the typical attitude of "thinking that I was better than I was."
A retired official, builder, principal, etc... who garnishes respect everywhere he goes, says to me, "You're the second best official in our association."
I replied, "Oh yeah?!," and naturally, with my attitude, I thought that he was correct, only to be surprised when he replied to me, "Ya, everyone else is tied for first." Sad thing is I didn't get it for a couple of seconds.
Then, 6 months later, I fell for the joke again.
The lesson was learned.