Celine Dion

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Celine took a break from her Las Vegas stage show to meet some of her biggest fans in November 2007. The stunned audience members received the surprise of a lifetime when Celine serenaded them with the song of their choice.

Then, the iconic singer opened up about returning to show business after taking time off to start a family, which was no easy task.

"When I had my son, I didn't want to perform in Las Vegas anymore," she said. "I had a life for the first time. I knew then that I wanted to have more success as a mother than a singer. It was probably one of the hardest moments of my life."

Celine also revealed the first time in her life she took charge—when her husband was diagnosed with cancer in 1999.

Read Celine's complete Aha! Moment.

Celine said the most important thing she learned from her husband's battle with cancer was, "My life is so much more than show business. ... My inner voice is a lot stronger than my singing voice."