Hugh Jackman Shares His Greatest Fear With Oprah (VIDEO)

From performing on Broadway stages to zip-lining from the top of the Sydney Opera House , the daring Hugh Jackson can seemingly do it all. As confident as he is today, Jackman says its taken a lot of work to get to this point. In his new interview on "Oprah's Next Chapter," Jackman sits down with Oprah and opens up about his lifelong struggle with fear.

I hate that feeling of fear," Jackman says. "I hate being afraid.

Since he was young, the Australian-born actor admits he's struggled with letting the emotion affect his life. I was a very fearful kid -- I was afraid of the dark, I was afraid of heights, he says.

Rather than let fear debilitate him, Jackman chose to face it head on. I made myself get over those fears... If anything comes up to me... and I feel frightened of it, I have to attack it, Jackman says. Because Im terrified that it will creep into other areas of my life and start to take over."

Oprah asks the question that gets to the heart of the matter. So, what were you afraid of? she asks.

Not being my best. Not being my best when it mattered, Jackman says.

Watch Jackman's full interview on "Oprah's Next Chapter," airing Sunday, July 28, at 9 p.m. ET on OWN .