Chrissy Metzpulled from her real-life experiences to help write an upcoming episode ofThis Is Us.

The actress and singer adds, “It’s gonna be a doozy and it’s gonna be really difficult to watch cause it’s been difficult to perform. So just brace yourself, folks.”

Metz also spoke about the process ofco-writing an upcoming Kate-focused episodeand how she drew inspiration from her previous marriage to screenwriter Martyn Eaden.

Chrissy Metz.Paul Archuleta/Getty Images

Chrissy Metz

To make the upcoming episode even more special for the actress, Metz’s costar and on-screen mom,Mandy Moore, will be directing.

“[Mandy is] ‘my mom’ and my friend and somebody who I’ve revered for a long time and respect,” Metz says.

“[She] just has been so fun and she’s so kind and gentle, but also speaks the shorthand of an actor who just wants the best performance,” notes Metz, who recently partnered withCapital One Auto Navigatorto share her story and help people find easy ways to purchase a car.

Mandy Moore and Chrissy Metz.Matt Winkelmeyer/Getty

Mandy Moore, Chrissy Metz

News that Metz would be co-writing an episode in the sixth and final season ofThis Is Uswasfirst announced last November.

“It’s really exciting to support fellow actors and people that you love trying new things,” Metz told PEOPLE at the time. “For me in particular, obviously, writing has been a very new venture, but I’m very excited.”

“Dan [Fogelman] is such a great mentor, and I get to write with Casey Gettinger and David Windsor, who are our writing team. It’s been really wonderful,” she conitnued.

this is us

Fans got a glimpse of her marriage’s fate in the season 5 finale when they discovered in a five-year flash-forward that Kate gets remarried to Phillip (Chris Geere), her boss at the music school for the blind.

The star added, “I think it’s important that we can find love in different ages, stages, times and places. And maybe in the unexpected.”

This Is Usairs Tuesdays at 9 p.m. ET on NBC.

source: people.com