Everyone is afraid of death. We can either suppress it or become aware of it. Suppression is the key to conformation at all costs. The conscious primal fear strengthens our ego.
The fear of one's own death is - if we are aware of it - a constantly bubbling source of insight. It flows in us and stays with us. And when our wishes and insights want to carry us beyond our personal limits, conscious primal fear acts as a natural regulator. We can recognize the motives of our wantings and abilities.