Prince Harry said he has a secret "technique" to try and win back King Charles' and Prince William's trust, after admitting their relationship had got worse in recent years.
In an ITV interview to promote his book Spare, which was published globally on Tuesday, the Duke of Sussex said he wanted to have his "father and brother back".
Harry said: "They've shown no willingness to reconcile. I would like to get my father back. I would like to have my brother back."
After his memoir was published, the Duke said his "technique" to win back his family's trust was to curtail the relationship between the Royal Family and the press, in order to protect his brother and father and win their trust back.
He added he wants to "change an institution" and the media landscape, which he described as an "enormous" challenge.
Harry told The Telegraph: "When you're trying to change an institution, and fundamentally the media landscape, that is not a small task.
"The scale of the challenge is enormous, and I have to be able to protect myself mentally and emotionally throughout that process."
He added he doesn't understand why it is considered "shocking and outrageous" for him to share his story.
Harry vowed to continue "the good fight" in standing up for his wife Meghan Markle "and other women".
He said: "If you don't lead by example, what is the point in living?"
The Duke said he thinks while his family might not like him sharing private details at the moment, they would thank him in the future for opening up about his trauma.
According to publisher Penguin Random House, Spare tells the Duke's story with "raw, unflinching honesty", chronicling his journey from "trauma to healing".
Among the book's claims included King Charles pleading with his warring sons not to make his "final years a misery".
Harry said he has edited out some anecdotes about his brother and father as he knew they would not forgive him if he shared them in his book.
He explained the first draft of Spare was 800 pages, but the book was now 400 pages long.
He said: "It could have been two books, put it that way. And the hard bit was taking things out."
"There are some things that have happened, especially between me and my brother, and to some extent between me and my father, that I just don't want the world to know. Because I don't think they would ever forgive me."