Volunteer and Coach some youth teams, in any sport, for about three or four years. evaluate yourself every day and consider, seriously, how you can better communicate. Move up through the ages to see how people respond differently to cues.
Or volunteer and observe some good high school coaches who get crap or inexperienced athletes and turn them into winners. Find, for instance, a track or wrestling team with no feeder program, but who has consistent success. Then go talk to that coach.