Business success comes with many perks—whether it’s raking in millions , gaining critical industry access, or simply feeling proud for scaling up a beloved product . But reaching new heights also comes with some setbacks, according to Insomnia Cookies founder and CEO Seth Berkowitz. Despite making millions and creating a late-night dessert staple for legions of college students, he’s faced some hard truths along his entrepreneurial journey.

“It can be lonely, it’s a solitary life. It really is. [During] the harder times, it’s very solitary—finding camaraderie, mentorship, some sense of community, it’s really important,” Berkowitz tells Fortune . “Because I go so deep, it’s sometimes hard to find others and let them in.”

Berkowitz has been scaling Insomnia Cookies since 2003, wh

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