She's previously opened up about her struggle with anxiety, and in a new preview for Keeping Up With The Kardashians, Khloe Kardashian admits her insecurities have been getting the better of her once again.
The 32-year-old is seen chatting to her older sister Kourtney in the sneak peek clip, revealing she's concerned she may not meet targets for her Good American denim brand business venture.
"There is so much to do to prep for the launch of Good American and Emma made me really nervous with telling me about this number and how hard it is to get to this number," she initially says in a piece-to-camera, referring to her business partner Emma Grede.
"Now I’m nervous that I’m not going to make my investors and my business partner happy."
Then speaking to Kourtney after a workout session, Khloe says she's had trouble sleeping.
"I woke up yesterday at 4:30am for press. Last night I didn’t go to bed till 3:45am," she says.
"Ever since Emma told me we need to sell X amount of units. I have so much anxiety because," she continues, before her older sibling interrupts, "You're going to sell that many units".
While Khloe has her doubts, Kourtney assures her, "We're going to make denim history".
That's when Khloe admits she's been comparing herself to their 19-year-old half-sister, Kylie Jenner who has her own Kylie Cosmetics range.
"I feel so nervous. I was like really? Kylie sells like hundreds of thousands of units in what, like 3 minutes?"
Then speaking in a piece-to-camera, Khloe elaborates: "I know we’re not necessarily competing against each other but still like I have always been known as the fat sister, and now that I’m over that, I don’t want to be known as the failing sister".