Prince William Reveals One of the 'Scariest Moments of His Life'

Prince William is opening about becoming a parent.

In the new documentary Football, Prince William and our Mental Health, the 37-year-old Duke of Cambridge says that having his three kids –; Prince George, 6, Princess Charlotte, 5, and Prince Louis, 2 –; was his “;biggest life-changing moment.”;

In the doc, Prince William talks with former soccer player Marvin Sordell, who suffered from depression after the death of his father. During their conversation, Prince William recalls the death of his mom Princess Diana.

“Having children is the biggest life-changing moment, it really is,” Prince William shared. “I think when you”;ve been through something traumatic in life, and that is like you say, your dad not being around, my mother dying when I was younger, the emotions come back, in leaps and bounds.”

The soccer player went on to admit that he “found it really tough” when he became a father, and Prince William agreed, saying, “Me and Catherine, particularly, we support each other and we go through those moments together and we kind of evolve and learn together.”;

Prince William continued: “I can completely relate to what you”;re saying about children coming along –; it”;s one of the most amazing moments of life, but it”;s also one of the scariest.”;

Football, Prince William and our Mental Health is set to air on BBC One in the U.K. on May 28.

Find out the latest on Prince William‘s relationship with younger brother Prince Harry.

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