people's families and little kids and stuff, you think, wow, i don't want them to have to go through the same things. >> but even harry and i over the years have not talked enough about our mother. >> never enough. >> shutting down all of my emotions for the last 20 years has had a quite serious effect. all of a sudden all of this grief that i'd never processed came to the forefront. i'd probably been very close to a complete breakdown on numerous occasions. >> for someone in prince harry's position to say that you now hear a lot of people saying that has had a huge impact on society feeling more comfortable talking about mental health. >> he wanted to really break the taboo, to give others the chance to seek help without being ashamed. >> at a charity event in canada harry introduces the world to