Prince Harry has said he doesn't feel much pressure to fill the boots of his mother, Diana, Princess of Wales, because it is something he can "never" achieve.
Speaking on ITV's Good Morning Britain in a pre-recorded interview before the Invictus Games, Harry said: "It's a great shame that she's not here... and that, yeah, you know, every day, depending on what I'm doing, I wonder what it would be like if she was here."
He recalled being in Orlando with his mother when he was a child, saying: "Running around with Donald Duck and all those characters with her, and now I'm back here, 31 years old, and trying my best to make her proud."
Harry added: "I don't feel there's that much pressure when it comes to filling her boots because I'm never going to be able to do that."
But he said that if there is even a small void that he can fill, he will endeavour to do so.
Asked about his mother's legacy and whether it weighs upon his shoulders, Harry said: "It's a weird one. I think earlier on in life you don't really think about that, you sort of find your own route in life."
He added: "In everything I do I hope I do it with a smile on my face, with an element of fun, and I love the fact that people are interested not with just what I'm doing but the causes that my heart's set on."
The Prince was asked how he got the Queen involved in the video in which he and his grandmother respond to US president Barack Obama and the First Lady's challenge about the Invictus Games.
He said she did not take much persuading, adding: "This is not unusual for her. It's an Olympic year, four years after she jumped out of a helicopter in a parachute.
"She's 90 years old but she gave me that look as if to say '90 years, and no-one ever asks me to do these fun things'. So it was like, 'OK, let's do this!'."
Speaking about his role as uncle to Prince George and Princess Charlotte, he said: "It's a shame that they're not old enough to come out here, but hopefully whether it's the next Games or the ones after that... get them down there and give them an opportunity to come and enjoy and see some remarkable people do some amazing things.
"I think George is almost at that age where he would completely get it, completely understand, probably be one of those kids going up going, 'You've got no legs, why's that?' And the guys would be more than happy to tell the kids that."
Harry said George is happy playing with his toys and Charlotte is crawling.
Asked about becoming a father himself, he said: "I look forward to the time when it comes, but at the moment I'm dad to 110 of these competitors, well, actually, probably more like 500.
"I feel incredibly proud. It's not pride for the Games. It's pride for them. Military or non-military. These Games have somehow managed to create this amazing inspiration, this amazing brand to encourage anybody from any walks of life to get up and smash it and make the most of your second chance, I guess."
He said he had moved on from the disappointment of being pulled out of active service in 2008 when his location was leaked in the media.
He said he had felt he was "one of the lads" before he was withdrawn, but he was now focusing on helping veterans who had returned.