“Competence is how good you are when there is something to gain. Character is how good you are when there is nothing to gain. People will reward you for competence. But people will only love you for your character.”
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.