When you love somebody who is sick you would do anything to make them well.

And if you don't have the medical training to help find a cure than you would walk to the end of the earth to find someone who can.

My best friend is one of three thousand Australians living with a disease called cystic fibrosis.

It's a life threatening lung disease that has to be treated every single day and cuts lives very short.

My friend has never asked for sympathy and would never admit to being sick because she is focused on living her life to the fullest and beating this disease one day at a time.

Because she is so strong it makes the rest of us feel quite helpless.

Sure, I have a positive attitude and I do believe that one day they will find a cure.

But aside from giving her one of my lungs the only thing I can do is try to raise as much money as possible to support the doctors who are trying to save her.

This is why I have signed up to walk 70km on Saturday, March 8 to help raise money for research that will hopefully find a cure.

It's a long way and I'm expecting blisters, sore feet, knotted calves, dehydration and shortness of breath.

But still I would have no reason to complain.

In the lead up to my walk I have interviewed six mums who have children with cystic fibrosis.

I think that if their kids can take 40 tablets a day, sit still for three sessions of physio and spend months of the year in hospital with needles in their arms without complaining then

I have no right to cry over sore feet.

These children follow a daily routine just to stay alive and they are the most beautiful kids you will ever meet.

They don't ask for much.

Most of them just want to play outside in the sunshine because it's a lot more fun than laying in a hospital bed.

And their brave parents are the ones giving them physio and making sure that everything they do is a step in the right direction to keep their child healthy.

I know that these parents would walk a lot further than 500 miles to save their children so 70km should be a walk in the park.

To sponsor Michelle go to www.cysticfibrosis.org.au/nsw-communityfundraising/