Here is a video of Sonia playing soccer. She is a very competitive and aggressive little player. At this stage of play, the faster, tougher girls just get more time with the ball. Sonia cried yesterday when her team lost. She is motivated to practice and be a good player. I have no part in this. Neither does Ryan. She is just this way. Jack, meanwhile, laid on the soccer field during scrimmage when Ryan signed him up for a league. He has no interest in competition but don't get him started on airplanes or dinosaurs or Minecraft or the solar system.
It seems the main job of a parent is to keep the children fed and step out of their way as you can't control much anyway.