Kim Phúc was the girl in the photo. She told an audience at the National Constitution Center that her faith helped her to heal emotionally.
She talked about the day of the bombing, about thinking of ending her own life, converting to Christianity and learning how to forgive.
She said that was put to the test in Washington in the 80s when she met the coordinator of the napalm bombing.
"I will never forget the words that he say. 'Please look at my eyes so you can see the sorrow that I carried on for 24 years.' And we hugged eachother and we embraced eachother, and we cried," Phúc recounted.
She told him she forgave him.
Phúc said she talks with children and adults around the world and shows them her scars and that iconic photo.
"Why I still alive? That is the question I always ask before, why I didn't die in those four bombs," she said.
Love, hope and forgiveness will always be more powerful than any kind of bomb, she added.