The Keeping Up with the Kardashians star, 36, took to Twitter on Wednesday to post a link to a 2011 TED talk titled "The Power of Vulnerability."
"When you ask people about love, they tell you about heartbreak," says the host of the talk in the video, research professor Brené Brown.
"The people who have a strong sense of belonging believe they're worthy of belonging," Brown says. "This is what I have found: to let ourselves be seen, deeply seen, vulnerably seen. To love with our whole hearts, even though there's no guarantee and that's really hard."
Kardashian and Disick, 32, broke up in July after photos surfaced of Disick partying and getting close to another woman.
The two have three children together: Mason, 5, Penelope, 3, and Reign, 7 months.
A source close Kardashian told PEOPLE in July that "now there's a strong possibility of life without him, and that's a scary thought for her," adding that "she's figuring it out and taking it as it comes."
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On July 31, Disick posted a photo from a wedding of him holding a place card that reads "Scott Disick Guest," with the caption: "When you realize the grass isn't always greener," seemingly alluding to the relationship's end.