Life has changed a lot for Caitlyn Jenner two years after announcing her plans to transition to become a woman.
In a new promo for 20/20's upcoming special, "Caitlyn Jenner: The Secrets of My Life," the former Olympian sits down with Diane Sawyer for a follow-up interview to her 2015 ABC News special.
"Have I made mistakes? Certainly," Jenner says in the sneak peek, when Sawyer asks if she's ever had "doubts" about if she's doing the right thing.
See photos of Caitlyn Jenner:
Watch the promo HERE.
"Caitlyn Jenner: The Secrets of My Life" with Diane Sawyer will air Friday, April 21, at 10 p.m. ET/PT on ABC. Jenner's upcoming memoir, The Secrets of My Life, will be released on April 25.
See more on the biggest revelations from Jenner's 2015 20/20 interview in the video below.