It’s a truism that you always want to hire folks with very high standards, but I’ve seen a staggering number of folks fail in an organization primarily because they want to hold others to a higher standard than their organization’s management is willing to enforce.
Focusing on past accomplishments creates obstacles to success in the present. If you're still talking about something great you did 20 years ago like it was yesterday, your ego is getting in the way.
What you did in the past makes a good story. What you're doing now makes a difference.