• Reese Witherspoon says the pressure she put on herself helped her find career success. • "I was probably successful because I had so much anxiety. They go hand in hand," she said. • Despite her achievements, Witherspoon said that there were still people in the industry who doubted her abilities.

Reese Witherspoon, 49, is an Oscar-winning actor and a leading Hollywood producer. She says the relentless pressure she put on herself is the reason behind her professional success.

"I was probably successful because I had so much anxiety. They go hand in hand," Witherspoon told Harper's Bazaar in an interview published Monday.

"I had pressured myself to extreme levels to show up at work in a perfect way. We all now know — perfect is not attainable. It's not sustainable. I stressed myself

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