Not the child, but we!
It is wrong to insist that the children learn to cooperate with us. That only makes them feel unworthy and incapable, because we are not easily satisfied.They don't understand how to do that and why. No, WΕ, parents, teachers, therapists, have to learn to cooperate with them, in order to achieve the best results and we will be able to celebrate his and our successes. Once they are less egocentric, they will be able to cooperate with us, that is the point! It is not something we can force to happen.