If we think we are at the top of our game then we are missing a trick.
Once we strive to not to better, because we think we are the best, then we stop trying.
The definition of ameteur is to be unprofessional or unsklilled, sometimes linked to being unpaid.
Well we can't all be skilled in everything and get paid for everything.
For example I cook at home, I'm not skilled in the trade. I'm an ameteur. (my family would agree) and I certainly dont get paid for it !
The next time someone puts you down because they know best, remember they are an ameteur at something!