Samuel Johnson struggled to speak after the actor and cancer research fundraiser was announced as Victoria's Australian of the Year.
The award comes just weeks after his beloved sister Connie died from cancer.
"Connie and I always liked turning negatives into positives," he said when he accepted the award on Thursday night.
"I've got some plans that I'm working on and I'm trying to uphold my sister's legacy," Johnson said.
He said he would continue to put aside acting to focus on supporting cancer research.
The passionate cancer fundraiser, actor and Gold Logie Winner, co-founded charity Love Your Sister with his older sister Connie, who died in September after a long battle with the disease.
Johnson pedalled more than 15,000km on a unicycle around Australia, raising $1.4 million for the Garvan Research Foundation and has helped raise more than $7 million for his charity.
The announcement the actor won Victoria's Australian of the Year for 2018 will help raise the profile of his charity and makes him a nominee for the national title to be revealed in January.
VICTORIAN AUSTRALIAN OF THE YEAR 2018 WINNERS:
* Senior Australian of the Year: Professor Paul Zimmet
The 75-year-old scientist and diabetes specialist predicted the global epidemic of Type 2 diabetes and has improved the lives of those living with the serious illness.
* Young Australian of the Year: Georgie Stone
The 17-year-old is a tireless campaigner for transgender youth. At age 10 she became the youngest person in the country to be granted permission by a court to take hormone blockers, the first stage of medical treatment for transgender children.