Oh, boy. Where do I begin?
CoachB25: GREAT post! ...and, illustrative of the fact that fine coaches can come from a variety of directions.
For the purpose of this post, I'll list a "brainstorm" of factors that I think tend to be present for most young coaches; virtually regardless of the level. If you or anyone else would like to discuss the topic more specifically to you or your child, I'd recommend that you start by PM'ing me. I'm always delighted to try to help young coaches to the extent that I can.
Common denominators for successful young coaches:
(1) Absolute passion for the game and a related commitment to developing their players into the best players they can become while coaching them.
(2) Constant devotion to learning whatever is relevant to developing their players and succeeding on the field. Ongoing sense that knowledge is dynamic, fueling a constant need to learn and keep up with the best minds in the sport.
(3) Willingness to sacrifice and devote long hours to doing what it takes to succeed as a coach. If a partner is involved, having a partner who truly understands and is equally committed to her partner's mission and objectives.
(4) Commitment to constant improvement as a coach, leader, and person.
(5) Capable of demonstrating organizational awareness and executing effectively in line with it. Adept at effectively communicating his program's needs to his superiors and having that translated into a budget that is sufficient to fund the program's necessary initiatives.
Those are a few that come to mind most readily. The sport needs a constant infusion of qualified new coaches. Once the playing days are over, there are a variety of quality ways that a former player can give back to the sport. I can think of no better or potentially influential than that of coaching.