Everybody is afraid of his death. We can either suppress that or make us aware. Repression is the key to customization at any price. The conscious urge strengthens our ego.
The fear of one's own death is - if we are aware of it - a constantly bubbling source of knowledge. He flows in us and stays with us. And if our wishes and insights wish to carry us beyond our personal limits, the conscious urge of urge acts as a natural regulator. We can recognize the motives of our will and ability.