A Dasein is a being in the world. The Dasein recognizes the place one has in time and space: that all beings are linked together with their Universe, their Being. They are all part of the one.
The Dasein will acknowledge his fate. He knows that he has no will of his own. He is a product of his environment and his Being. The Dasein must be authentic to himself or he will never be at peace. Moreover, what truly separates the Dasein’s existence from all other beings is the Dasein’s contemplation over that existence: the will to attempt to discover what it is that makes a Dasein individual when, naturally, the Dasein is not. We are all only part of the whole.
Unless, of course, we are mistaken.