Talk show host Tran Thuy Duong asked the 34-year-old about his personal commitment to protecting wildlife and his family life as well as taking questions from a small studio audience.
Speaking about his children during the 25-minute interview, the Duke said: 'There's wonderful highs and wonderful lows. It's been quite a change for me personally.
'I'm very lucky in the support I have from Catherine, she's an amazing mother and a fantastic wife.
'But I've struggled at times. The alteration from being a single independent man to going into marriage and then having children is life-changing.
'I adore my children very much and I've learnt a lot about myself and about family just from having my own children.
'George is a right little rascal sometimes, he keeps me on my toes but he's a sweet boy. And Charlotte, bearing in mind I haven't had a sister so having a daughter is a very different dynamic.
'So I'm learning about having a daughter, having a girl in the family.'
He took a question from a 10-year-old girl about his advice on how an individual could help protect wildlife before going on to describe his hopes that his children would inherit a better world.
William said: 'I worry about the future more. When you have something or someone in your life to give the future to I think it focuses the mind more about what you're giving them and are you happy that you've done all you can to leave it in a good state.
'I would like them to grow up with more simple aspirations. I think there's a lot of huge aspirations and people living with an enormous amount of stuff that they don't necessarily need.
'The materialism of the world I find quite tricky sometimes.
'I would like George and Charlotte to grow up being a little bit more simple in their approach and their outlook and just looking after those around them and treating others as they would like to be treated themselves.'
Read more: http://www.dailymail.co.uk/news/article-3950762/Prince-William-admits-s-struggled-parenthood-says-father-emotional-appears-Vietnamese-chat-show.html#ixzz4QPycRKIZ
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