Philosophy
You must love the game and want to share with the players a certain way of life, a way of seeing soccer.
I am always socked when I see young players that are not allowed to go forward if they play as defender. As coaches, we must constantly seek to become much more multi skilled. Working and learning in areas such as psychology, physiology, nutrition, human development, fitness, self development....
We know that people learn in many different ways. Some are more visually oriented, others learn best by hearing. (not with my accent!) For example, one player may be able to do exactly what you are asking the first time, but another may need to see it performed a few times first before giving it a go.
It is important for the kids to be concentrated and do his best of what I am asking for but also it is our job (coach and parents) to get involved emotionally. Our kids won't like this game, if we don't. They won't play hard if we are not passionated about it. Dr Donchin (University of Illinois) says "99 percent of all learning is non-conscious." Watch soccer on TV, play with them... Teach them without knowing it!