I'm sure others have written about Abraham from the perspective of the Hero's Journey. I read Joseph Campbell's Hero of a Thousand Faces many years ago in which he describes the archetypal journey of the Hero. I will not go into this in detail because I did not want to do a research project but speak from my memory and impressions. I think Abraham's life journey bears similarities to the archetype hero's journey. First there is the call to the journey. Then the travels and adventures commence and it is critical that while on the way he learns certain things and passes certain tests. He travels to Egypt. It is fitting for the story and his descendants that he receive the friendship and sanction from the Pharoah. This is important to establishing his status. His ultimate test is the ordeal of the sacrifice of his son Isaac. (sidebar - the story also is for the purpose of ending human sacrifice in general). Finally he achieves his goals, wealth and numerous progeny and a fine burial and he receives the Boon: all nations are to be blessed because of him. It was fitting to have him originate from a place like the Ur of Chaldees, at the far eastern end of Mespotamia, so that his journeys take him, as the picture above illustrates, across the whole of the known civilized world. This is meant to convey that his descendants are also first class citizens of the world, not hicks from the edge of civilization.
Now the rationalist in me continues to think about the fact that for any person, the number of their ancestors going back a thousand years just about equals the population of the earth. This is not actually the case because of cousins marrying and geographic barriers like the oceans, deserts, and mountains. but the point is that any enterprising person leaving home in Mesopotamia to seek their fortune in Canaan and who had descendants would be their ancestor. Some who did that would not have passed the tests, dying early, giving up, continuing elsewhere. Some of the others may have. Abraham is the archetype. He is not one person but many.