"I said, 'I'm trying to raise awareness for this disease,' and I said, 'it's so important I get the word out about this,'" he recalled.
Earlier this month, Olsen finally received the news for which he had been waiting, a new set of lungs had been donated.
"I felt so privileged that I got the call, but I know I was at a turning point," he said. "If I hadn't got the call, I would have died."
During the transplant surgery, things were looking up until something happened and it went downhill. In a Facebook Live video, Olsen's wife Patti asked followers to pray for Mike.
"His body was not being oxygenated properly by his new lungs," she said.
Olsen ended up in a coma attached to a ventilator. In an emotional video posted to Facebook, Olsen recounted his time in heaven.
"I saw these swirling lights and I heard this pattern of voices or something. And I just realized now what they were saying," Olsen said as his voice chokes with emotion. "They were saying: 'Mike's coming home. Mike's coming home. And then I heard Jesus say: 'It's not his time. He's just here for a visit.'"
"But now it's coming back to me like a story unfolding and I'm realizing I had a genuine supernatural experience with God," he said. "And it really helps me realize the love of God for each one of us."