Prime Minister Julia Gillard says the best piece of advice she's ever been given was from a teacher in primary school.

"My favourite teacher Mr Crow said 'always be happy but never be satisfied, so don't go around scowling. We live a very good life here in this wonderful country, but never be satisfied and always aim for more than what has happened today'," she said.

"Those words come to me as Prime Minister. We live in a great place, but we're always building for tomorrow - so be happy, but not satisfied. We can always aim higher."

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Billionaire boss Gerry Harvey says the best piece of he's heard is "to listen to other people. Everyone has a point of view, but some people have great points of view. If you listen to what they say, there will be something there you'll learn from."

He says "some people are very smart in certain areas of life. If you can pick the areas they're very good at, you can learn a lot from them."

Star of this year's hit film The Sapphires, Jess Mauboy, was given plenty of great advice from some of the experienced actors she was working with. "A lot has come from Deborah Mailman - especially working with her and just in terms of observing her and watching her. She's just incredible."

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The Collective captured plenty of hearts on this year's X Factor, and according to Trent Bell the key lies in doing what you love. "The best advice I've ever been given is from my dad. He said 'look, whatever you love to do, do it. Never stop trying, because once you stop trying you can fail, but persistence and perseverance is the key to success.' And that's all I've been doing, and all we've been doing our whole lives. And never stop."

Singer Cosima Devito says the best piece of advice she's been given is "to keep smiling, and stand up and live for your dreams. And that time fixes everything."

Winners and Losers star Tom Wren says to remember that "you're married for a very long time, so choose wisely."

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Home and Away's Braxton boys have certainly made the Bay an edgier place this year, but away from his character, Nick Westaway, who plays Kyle, says the best piece of advice he's been given "would probably reference acting as the industry I want to be in - and that was to just keep acting. Nothing beats experience."

His fellow Summer Bay costar Charles Cottier, who plays Dexter, echoes with a similar piece of advice "don't give up what you want most for what you want right now. I think that's a good piece of advice to remember."