Sean Dolan, who was a high school principal in New Jersey, was diagnosed with cancer in 2016.

"I never thought that someone close to me would, you know, get cancer, or have something as serious as this happen to them. But it did," Grayson said at the time. "I just try to appreciate every moment that I’m with my dad and being with my family and being with my friends. It also made me really appreciate my health and realize how important it is to not take things like that for granted."

Ethan added, "Just take a deep breath. Go through that big stack of paper of terrible news and find the positives in it. Positives are everywhere. You might just have to look a little bit harder for them."