As the child tries to walk, parents begin to impose upon him certain restrictions and he discovers the limits of his capabilities. He is faced with an unpleasant reality, for example, with the parental ban. He is protesting. Parents insist on respect for boundaries. The child falls into a rage, followed by a period of sadness, when parents can comfort their baby. Observe the border, but do not deprive the child of sympathy, and he will learn to come to terms with his first loss, when he has to give up its claim to the place of God Almighty. The kid is convinced that he is not ruling the universe, and to accept that it is not so easy. You have to set rather rigid boundaries that the child could be convinced of this truth, and give him enough sympathy that he wept for their grief. And then push him forward — let him see that his are still much more interesting that it was time to move on to the next task, despite the fact that with the previous one he lost.