A California woman who took on the #giveit100 challenge, promising to film 100 days of workouts, lost 18 pounds and became a viral sensation in the process.

LaKeisha Shurn, of Berkeley, Calif., worked out for 100 days straight and filmed each of those workouts as part of the challenge, which calls on people to try something new and record a 10-second daily video of their progress.

"I have low self-esteem. I am going through depression, and I want to change all of that," Shurn, 32, says in her first video. "I want you to see how one person really changes everything about their life."

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Shurn was inspired to join the challenge after watching a video of 100 co-founder Karen X. Cheng learning to dance in a year. Cheng's video went viral with more than 4 million views last summer and the outpouring inspired her to start the #giveit100challenge.

Cheng says that Shurn's video, which already has nearly 100,000 views on YouTube, has caught people's attention because it is not your typical weight-loss story.

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"Every other weight-loss story is about the number of pounds, but this is about how she changed herself inside," Cheng told GoodMorningAmerica.com. "What's appealing about LaKeisha is it's not the before and after, it's the hard work in between."

"That's what no one sees, and she showed that," Cheng said.

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Shurn, who has not responded to requests for comment, documented all the difficulties she faced daily, from going to her gym, a local 24-Hour Fitness, in the pouring rain to watching her friends move forward more quickly in their lives than she was.

In her final videos, Shurn expresses gratitude for her progress, from making it out of the "300-pound club" to being flexible enough to lift her leg with her arm.

"I've found love in myself," Shurn says at the end of her personal 100-day challenge.