It depends on your perspective. Some might think so, while others might have doubts based on various factors like the hero's actions and character development.
The manhwa 'A Broken Hero' tells the tale of a once powerful hero who has fallen from grace. He has to overcome inner demons and external obstacles to reclaim his heroic status. The story is full of action, drama, and self-discovery.
One of the best 'zero to hero' novels is 'The Alchemist' by Paulo Coelho. It follows the journey of a young shepherd boy who sets out to pursue his dreams and discovers his true self along the way.