This week's fired Apprentice candidate Melissa Cohen said the show had turned her into a "monstrous warmonger", but taught her to change her ways.
The 24-year-old former hairdresser was fired by Lord Sugar after a series of confrontational clashes with her competitors and was told by Karren Brady that her self-claimed excellent sales pitches were "very annoying".
Cohen, who refused to shake hands with rival candidates Jamie Lester and Stuart Baggs after she was fired, said: "I regret that I didn't act with a bit more decorum in terms of my sportsmanship."
She added: "I am a confrontational person, but far more affable and not monstrous in my daily life. I'm not such a warmonger. But when you're put in a competitive environment certain aspects of your personality can come out that aren't normally there."
Her team Apollo, led by Lester, lost this week's task - despite selling more than £76,000 worth of eco shower-heads and double-handed spades - after rival team Synergy sold over £122,000 worth of their product, Baby Glow, a baby grow which changes colour if a baby has a high temperature.
Apollo had pitched to the inventor of the Baby Glow to sell her product, but Baggs's blunt line of questioning put her off.
Cohen said: "Stuart had been in the boardroom already, I hadn't and he did lose us the winning product. We would have won if we'd had that product, it's as simple as that. But I do feel that he should have gone. He'd already had one go at the boardroom, it was my first time in."
The Business Food Manager had claimed she could "sell ice to the Eskimos" but her sale pitches came under fire on more than one occasion during the show.
She admitted: "You don't want the thing that you think you're most good at to be completely vilified by the people that you've come to get agreement from, but I'm okay with it.
"You have to take the advice that is given to you and Lord Sugar is probably best poised to give that advice."
Cohen admitted it was hard to be told by Brady that she was annoying, but that she had tried to change.
"Whilst obviously you feel slightly hurt that your superiors feel you're annoying, I can see where she was going with that, because with the pressure I put on myself I was really pushing home the point of 'I won't fail'.
"So I probably did come over a little bit annoying, but you have to learn from what's being told to you."
In the heat of the boardroom debate about who should get fired, Cohen accidentally called Lord Sugar his former title of Sir Alan, before quickly correcting herself.
She admitted: "It's a name change and you're used to calling him Sir Alan from the TV, so it's natural that it comes out.
"But he's an affable gentleman, he's not as gruff as he makes out - he'll correct you if you get it wrong or let it slide and you get used to it."