JACKSONVILLE, Fla. -- Jaguars safety Donovin Darius is using his fame to help sick children at Wolfson Children's Hospital, leading an effort to raise millions of dollars for the hospital.

On Tuesday, Darius visited the hospital and went room to room, meeting with its young patients, hoping to inspire them to fight the diseases many of them are battling.

For many Jaguars fans, the impact Darius makes on the field is obvious, but it's the impact he makes off the field that the 10-year NFL veteran said is most fulfilling.

"I love to help people. I love to serve people and do everything I can," Darius said.

He's doing that by hosting Double "D" Days, a program started to help raise money for the children's heart center at Wolfson Children's Hospital.

He and potential donors visit sick children, like 17-year-old Jessica Gaines, who is suffering from Cystic Fibrosis.

"It's an opportunity for me to give hope and to encourage the kids and the parents that are coming because when it's all said and done, the kids didn’t ask for this," Darius said.

"I was pretty shocked. I thought it was cool though, and pretty funny that he's wearing a lab coat," Gaines said.

He's no doctor, but Darius is doing everything he can to put smiles on the faces of the sick children at Wolfson Children's Hospital.

He said God gave him and others like him a gift, and that the program is a chance to share his gift with those who need it most.

"All we're doing is sharing that love with these children. We're reaching out beyond our comfort zone to do something for someone else," Darius said.

Channel 4's John Dunlap reported that Best Buy assisted Darius by bringing $20,000 worth of gifts to the children's hospital.

Darius has donated $50,000 of his money to the charity. He said he hopes to raise $2 million. He has raised $800,000 for the children.