Strictly Come Dancing's Lauren Steadman has said that ''demons" in her head have her always striving for perfection.
The Paralympic athlete also said she is so focused on her training for the BBC show that she has no interest in the dramas surrounding some of her co-stars.
Steadman, who is partnered with professional dancer AJ Pritchard, said that her biggest competition in the series is not one of the fellow contestants, but herself.
"I've got demons in my head, I always want to be better than I am," she insists. "And AJ's always telling me, 'Lauren, you're doing really well.' I'm not negative but I'm always wanting to be better and better."
The 25-year-old added: "I enjoy getting the positive comments because it's where you draw your confidence from, and encourages you the next week, but at the same time I really like the constructive criticism because it gives you something to focus on and make sure I'm ready for next week."
Steadman, who was born missing her lower right arm and who has competed in three Summer Paralympic Games in both the swimming and paratriathlon events, also admitted that Strictly is "definitely a lot more challenging" than she thought it would be.
She said: "There are so many different aspects that you don't realise when you're just watching Strictly.
"I suppose it's a case of, you might do one thing and achieve it really quickly, and another thing might take you ages and it's a little bit soul destroying when it takes you so long to get it."
She added: "Something I'll never get out of me is my competitive side, and what helps as well is that AJ is very similar-minded, and we both strive every week to be better and better. I'm a bit of a perfectionist."
Strictly Come Dancing's results show airs tonight at 7.50pm on BBC One.