I need a dose of the natural environment on a regular basis. It balances the bitumen and high rises of Collins Street.

I am confident there is a cause for everyone. Think of how you can contribute; we all have different skills.

If your body is crying out for a change, or crying out that it's unhappy, for goodness sake listen to it. Our bodies aren't machines that get by with a grease and oil change every 50,000 kilometres. Stress is part of life but if prolonged stress is in our life, we have to ask ourselves if we are in the right place, right frame of mind, or doing the right job.

I embrace the concept of enlightened self-interest - that in doing something for others, people also reap profound benefits for themselves. It might involve a little bit of sacrifice and discipline, but, and this is so crucial to understand, that participation has given me back so, so much more than I have given it.

Investing intelligently in those of us who are marginalised means fewer people in jail, fewer homeless, fewer unemployed, fewer of us who are forlorn and depressed, fewer people addicted to things that drag us down... Because as we invest in those that do it tough, we will see more Australians taking pride in themselves, having realisable dreams and aspirations and making their own positive contribution to the world's greatest nation.

I need a dose of the natural environment on a regular basis. It balances the bitumen and high rises of Collins Street.