“Watching me on the football field is never a pretty sight,” he stated (viaYouTube).

“Thank you for that,” Harry responded.

“I think that normally happens at this stage of your life.”

Prince William and Prince Harry cheer in crowd

“It’s really nice looking back at it and reminding yourself,” he said.

In August 1997, she was tragically killed in a car accident.

At the time, Prince William and Prince Harry were just 15 and 12 years old, respectively.

Prince Charles and Princess Diana hold their young sons

“It’s important that they know who she was and that she existed,” he said.

In 2018, Prince William opened up about how his mother’s death impacted him and his brother.

“He puts himself down, but generally he’s done seriously well,” he said.

Young Prince William and Prince Harry sit with Princess Diana

Prior to the training courses, Prince William had only good things to say about his baby brother.

“He knows what he’s doing and he’s very good at what his job is.”

“You have to be quite strong about it because otherwise you’re a walking mess.”

Prince Harry smiles at the camera

“For me, it was like, ‘I don’t want to think about it.'”

“You have to prioritize your mental health,” Prince William responded.

“Someone has to take the lead and be brave enough to force that conversation.”

Prince William looking down

Even the two royal brothers have said repeatedly that they hated living together.

“First and last time we’ll be living together,” Prince Harry immediately responded.

Prince William followed with: “It’s been a fairly emotional experience.

Prince William, Princess Catherine, and Prince Harry talk

I cook [for] him and feed him basically every day.

I have to wash it up.”

Harry shook his head and groaned, “Oh, the lies.”

Prince Harry and Prince William in uniform

From the moment she stepped into his life, she was a major target for both praise and humiliation.

He knew what I was talking about."

Meghan Markle and Prince Harry pose together

Prince Harry’s book “Spare” on display