"You can't be too afraid. You gotta be ready to jump into the fire and hope that your burns will heal, your wounds will heal," he tells us in the video above. "That's the only way you're going to keep coming back."
That was certainly not the advice we were expecting.
"If you test your limits, you might die, but you might not," he says. "Matt's superhero could be like, the Human Scab or something like that. He just keeps coming back."
Something tells us that advice isn't actually going to be all that helpful for anyone but Matt Donovan.
As for Matt's fate in the finale, executive producer Julie Plec couldn't tell us whether he lives or dies, but she did give us this statement to tide us over:
"I'm one of the biggest cheerleaders for Matt Donovan and happiness. I ship Matt Donovan with happiness, but there are plenty who don't, so we'll see who won when all is said and done."
On a slightly lighter note, click play above to hear from Roerig and his costar Michael Malarkey share their messages for the fans as the series says goodbye, and stay tuned for more scoop on the finale!
The Vampire Diaries series finale airs tomorrow night at 9 p.m., following a retrospective of the series at 8 p.m. on the CW.