It doesn't mean you as a coach have done a good job. Real winners work with kids, not use them to satisfy their personal winning aspirations. Several other myths involve inspiration. One is that coaches need to get their players up for the game. If you ever coached or breathed air outside a vacuum you know that kids are always up.
Kids are especially happy when they play sports.
As a player I can't remember any time I was depressed for more than 3 seconds regardless of the score. I needed to calm down and focus players on the job at hand. Another myth involving inspiration is that inspirational time-outs or halftime talks can greatly influence the play of a team. Players need specific information and ways to do things, not uplifting speeches. An uplifting speech can't teach players, only working on fundamentals will do that.