Of course he could. An autobiographical novel was a novel that used personal experiences as clues to show one's growth, experiences, and life sentiments. Although a person's ordinary life might not be enough to make a wonderful novel, everyone had their own unique life experiences and stories. They could express their inner world through writing. Writing an autobiographical novel required the author to have enough imagination and writing skills to transform personal experiences into vivid storylines and characters. At the same time, the author also needed to think deeply and reflect on his own experience, digging out the beauty and regret in it, as well as the impact on his own growth and development. If you have an ordinary life but have a strong desire to write and have enough imagination and writing skills, then you can express your inner world through writing and create a wonderful autobiographical novel.