For Rob Kardashian, fiancée Blac Chyna is the only person who could?ve helped pull him out of his depression. According to the reality star, he needed someone who wasn?t a part of his famous family during his darkest times. Though he now appreciates having his mother and sisters there for him, he credits Chyna, who?s currently pregnant with their first child together, as the person who impacted his life the most. ?Sometimes your family can?t get you out of the worst place that I was in,? Kardashian says in an interview with On Air with Ryan Seacrest on Thursday (Sept.