'GMA’s' 40 for 40: YouTube Star Lindsey Stirling Reveals the Secret Behind Her Viral Videos

The artist talks with Rebecca Jarvis about her success on YouTube.

"My viewers love to see something unique," she said.

Stirling, who reportedly made $6 million last year, opened up to Jarvis that it wasn't an easy road getting to where she is today -- saying that at one time, her parents couldn't afford both dance and violin lessons for her as a child.

"Working hard for something makes you appreciate it more," Stirling said. "I knew that if I stopped practicing, I'd lose my lessons."

Stirling said she hopes her experience motivates young artists who aspire a similar success.

"Life is kind and it will give you a chance," she said.