Prince Harry [Courtesy]

Prince Harry says his "life was a nightmare" and accused the Royal Family of 'total neglect' as he opened up to Oprah Winfrey about his mental health struggles.

The Duke of Sussex was talking to the American presenter on his Apple documentary The Me You See and confessed that he's only recently started therapy sessions despite feeling like he needed them long before.

During the series, Harry opens up in detail about how Diana's death in 1997 influenced his decision to quit the glare of life in the royal family.

Harry also addresses the traumatic memories from his childhood including the death of his mother Diana, Princess of Wales, and harassment on social media of he and his wife Meghan Markle.

Referring to his attempts to get help from his family with the attacks levelled at the Sussexes online, the Duke of Sussex said: "Every single ask, request, warning, whatever it is, to stop just got met with total silence or total neglect."

"We spent four years trying to make it work. We did everything that we possibly could to stay there and carry on doing the role and doing the job."

Harry said he went into "fight or flight mode" and told how he was "all over the place mentally" and he said from the age of 28 to 32 was a "nightmare time in my life."

"Towards my late 20s I was starting to ask questions of 'Should I really be here?'. And that was when I suddenly started going: 'You can't keep hiding from this," Harry explained to the presenter in the opening episode of the five-part series.

"Family members have said 'Just play the game and your life will be easier. But I've got a hell of a lot of my mum in me.

"I feel as though I'm outside of the system but I'm still stuck there," he revealed. "The only way to free yourself and break out is to tell the truth."

Harry said he started serious therapy almost five years ago when he met Meghan. The couple, who moved to the US in 2020 with their son Archie, married in 2018.

The 36-year-old is also seen in the series undergoing a form of therapy known as Eye Movement Desensitisation and Reprocessing.

Harry uses EMDR to treat unresolved anxiety stemming from his anger at the media and the death of his mother, Princess Diana, when he was 12.

The Duke of Sussex told Oprah he had a "fear" when he first started therapy but said he needed to "heal" from the past.

He candidly discussed how he suffered from panic attacks following the death of his mother, Princess Diana.

The Duke of Sussex added the happiest time of his life came when he was in the army.

Speaking about his 10 years' service Harry said he enjoyed it "because I got to wear the same uniform as everybody else."

He said: "I had to do all the same training as everybody else. I started from the bottom like everybody else.

"There was no special treatment because of who I was. That was where I felt my most normal, and actually within my younger years the most comfortable I felt was out in Afghanistan, away from the media."

Discussing his relationship with the Prince of Wales, Harry says Charles told him that media attention and being part of the Firm was something he had to get used to.

He said: "That doesn't make sense. Just because you suffered, it doesn't mean that your kids have to suffer. In fact, quite the opposite. If you suffered, do everything you can to make sure that any negative experiences you had, you can make it right for your kids."

Prince Harry and Meghan Markle [Courtesy]

The five-part documentary marks Harry's first outing as a producer since he and his wife Meghan stepped down from their royal duties and moved to California last year.