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.
The light novel 'Re:Zero - Starting Life in Another World' also fits this. Subaru is a normal boy who is suddenly thrown into a fantasy world. At first, he is completely out of his depth, but through countless deaths and resurrections, he learns, grows, and slowly becomes a hero - like figure who can save others. His journey from being a zero in this new world to a hero is full of hardships and character development.
A famous one is that of Narendra Modi. He came from a simple family background. Through his hard work in the political arena, rising from the grassroots level in the Bharatiya Janata Party, he became the Prime Minister of India and has been making significant changes at the national and international levels.
Mangalyaan, India's Mars Orbiter Mission, is also a zero to hero story. India had limited resources compared to other space - faring nations. But the Indian Space Research Organisation (ISRO) with its dedicated scientists worked tirelessly. They overcame numerous challenges and managed to send a spacecraft to Mars on a relatively low budget, making India the first Asian nation to reach Mars orbit, which was a remarkable achievement.