Kate, 35, and William, 34, the parents of Princess Charlotte and Prince George, opened up about the profound effects of becoming parents and the challenges they faced in the first few weeks after George was born in 2013.
He was praised by the duchess, who described him as "brilliant" for revealing in an interview with the Daily Telegraph that he spent almost 20 years "not thinking" about the death of Diana, Princess of Wales, and eventually got help after two years of "total chaos".
Just recently, Prince Harry said that the reason why he was so wild and out of control during his twenties was because he had a hard time processing his feelings over his late mother's death. "But it's being courageous enough, like you obviously were, to reach out".
Prince William was 15 at the time of her passing, while Prince Harry was 12.
Kate Middleton talked about how she feels being the mother of two children during an event at the Global Academy in London. "No matter how many books you read".More news: Harry Redknapp appointed Birmingham City manager after Gianfranco Zola quits
In the end, he realized there is nothing he can do to bring her back, and for that reason, he stifled his emotions.
Addressing William, he says: "You've always said to me, you've got to sit down and think about those memories". "But you can't help it if in the morning when you wake up you are so exhausted, you are so sad, you are so full of anxiety and the shakes that you can barely think".
In response to the video, Paul Farmer CBE, chief executive of Mind, said: "This is a defining moment for mental health. And having asked others to start conversations on mental health with their friends and families, they wanted to show that they are taking part as well".
They will also join a roundtable discussion to talk about the importance of good mental health with Global breakfast presenters LBC's Nick Ferrari, Heart's Jamie Theakston and Emma Bunton, and Capital's Roman Kemp, as well as students and people who have taken part in the morning radio shows.
A number of callers specifically mentioned the impact the royal family had on their decision to call, and said they felt it was important in helping to tackle stigma which sadly still surrounds mental health, which might otherwise prevent them for asking for support.