In a 19-minute video posted Tuesday, Smith describes what happened Sunday, when he was hospitalized after performing a new standup special, Kevin Smith Live! at the Alex Theatre in Glendale, Calif., and how the event has made him reflect on his life.
"I didn't piece together [I was having a] heart attack," Smith said in the clip. "Even when I was sitting there going like 'my chest is heavy' and stuff and even though my father died at the age of 67 of a massive heart attack."
"I went through lifestyle changes, and some [explicit] don't matter," the 47-year-old director of Clerks and Mallrats said of how he has lost almost 90 pounds since 2010. "Some [explicit] you just can't beat because it's genetic."
Smith also thanked actor Chris Pratt for sending him prayers on Twitter after learning of the heart attack.
"Poor Chris Pratt, one of my favorite actors on the planet ... put up a nice tweet ... and apparently, like, some people were like '[explicit] your prayers,'" Smith said of the Guardians of the Galaxy star receiving backlash on Twitter.
"Please don't fight over stuff like that, it's a waste of time. Whether you're religious or not, somebody saying 'I'll pray for you' is like a good intention. It's very nice," he continued.
The video ended with Smith becoming emotional as he discussed his life and loved ones. "I had a good long moment to think ... I thought about my parents and how they raised me, and my brother and my sister, and my friends, and my wife and my kid, and this weird wonderful career that I've had for so long," he said.
"I was like, content. I didn't want to die, don't get me wrong, but I was like, 'Well if the ferryman comes tonight, I got to pay him.' What a ride it's been. What an incredible [explicit] ride."