The winner of Season 15 admits that the comments following her win were "hurtful"
Credit: Paul Drinkwater/NBC/NBCU Photo Bank/Getty; Trae Patton/NBC/NBCU Photo Bank/Getty

When Rachel Frederickson‘s 5’4″ frame weighed in at a scant 105 lbs. at The Biggest Loser finale in February, the voiceover artist from Minnesota faced a barrage of critics accusing her of an eating disorder.

Even trainer Bob Harper admitted that he was “stunned” by her weight loss.

As one of the Today show’s “2014 Voices,” Frederickson penned a revealing blog post in which she opens up about how “hurtful” the negative comments were, and how they reminded her of what landed her at the Biggest Loser Ranch in the first place.

When Frederickson was in high school, she followed a foreign exchange student to Germany and started “a new life with a young man I thought I would be with forever,” she wrote.

“It didn’t take long before the voice of a boy I loved started diminishing my self-esteem. His voice told me I wasn’t enough and I believed it,” she added. “I started listening to a louder voice than my own, and in turn, I lost the person I loved being.”

This experience was repeated for Frederickson when, years later, she allowed other people’s voices to affect her following her win. The comments were “hurtful,” she writes, and “people tried to bring me down and [privately] succeeded.”

However, “2014 has been a year of learning, changing and growing for me … There will always be other voices in life. The trouble comes when you stop listening to your own.

“I am committed to trusting my decisions and standing behind them.”

At the start of Frederickson’s Biggest Loser journey, she weighed in at 260 lbs. After her 155-lb. weight loss secured her the win, she was a size 0-2, which “shocked” her trainer, Dolvett Quince.

“Maybe I was a little too enthusiastic in my training to get to the finale,” Frederickson previously admitted to PEOPLE.

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