Rob Kardashian may have been reduced to tears during part one of his family's televised Keeping Up With the Kardashians therapy session, but when part two airs Sunday, Kris Jenner's only son is holding his own.

Returning to the session after storming out in tears when sister Kim, 31, insulted his career aspirations, Rob, 25, collects himself to speak civilly to his family. He tells his siblings -- including Kourtney, 33, and Khloe, 28 -- that he feels like his sisters don't include them in their wildly successful work ventures. 

"You say you want something . . . well, no one ever gave me anything," Kim snaps in a preview from Sunday's episode. "I want something, I make it happen. Kourtney wants something, she makes it happen. Khloe wants something, she makes it happen."

When Rob protests that many Kardashian ventures involve the sisters as a trio, Kim balks. (The siblings also share half-sisters Kendall and Kylie Jenner.) "A lot of the things we do together are our makeup line and our nail polish…that stuff isn't appropriate for you, but we would do anything for you and we've asked you so many times," she admits.

"I've always been the type to hustle and do it on [my] own, so I feel like sometimes when you want help, you're not directing us," Kim continues. "I told mom 'This is exactly what I want to do,' and she made it happen. We would all help you if you [provided] a little more guidance to us."

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Concluding that therapy helped his brood reach a "good place," Rob recently told KIIS-FM's Ryan Seacrest that he and his sister clash because she's an easy target. I know how to push her buttons. But obviously we say those things and we love each other the next day."

Keeping Up With the Kardashians airs Sunday at 9 p.m. (EST) on E!