"I've been through the system so I come from a different place when I deal with people that's not clinical, it's based around compassion and a deep understanding of what people are experiencing."
He said it could be shocking and scary when you were in that place and didn't know your way around the system.
"I lost myself as a person and I felt like a ward of the state so it's important work, I think, to make sure people have their own feet to stand on and their own to voice and have an avenue to be heard."
Driving with his son at the time of his big win, Nu'u said he couldn't believe it.
"I've never won anything in my life. It was amazing. I was so blown away and my son thought it was so cool."
Nu'u said he used to ride motorbikes all the time in his younger years and it was such a thrill to be able to pick it up again.
"I took it for a spin and disappeared for an hour and half after I got it. I was smiling so hard."