Complex sentence: Each of us haves a life story it starts with memories of our childhood and continues to be written thought out our lives, the pattens of your life story is countless to other people's, these stories are the focus of our developmental psychology.
Split into simpler sentences: Each of us have a life story and it starts with memories of our childhood and continues to be written thought out our lives. The patterns of your life story is different to other people, these stories are the focus of our developmental psychology.