So Ji Sub opens up about his career and what he does to feel "energized" whenever he seems to be hitting rock bottom.

In an interview ahead of his new movie "Confession" the top star shared his thoughts about his previous roles and wanting to play more challenging characters in the future.

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In the same interview, the actor confessed that there are times when he feels like he is in a slump; however, he overcame this by watching his previous movie.

He said that he watches the 2004 film "I'm Sorry, I Love You" when he feels down.

"I filmed that drama with all my passion for acting. So watching it brings me energy," he said.

Moreover, So Ji Sub also mentioned that the movie "I'm Sorry, I Love You" has a "special place" in his heart because it is the film where he gained the viewers' attention.

IN CASE YOU MISSED IT: So Ji Sub Reveals Gaining Weight After Being Married to Cho Un Jeong

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Written by Geca Wills