[2] After graduating from NSU, he interned at the Wayside Theatre in Middletown, Virginia, landing roles in Steve Martin's adaption of The Underpants, The Killer Angels and A Christmas Story.

While at Oklahoma State University, he applied for a semester at Columbia College with the Second City, in Chicago, Illinois, and decided to leave the graduate program and focus on a career in comedy.

[4] He names The Shithole in Chicago as his favorite venue, which he explains is "run by a couple of guys who produce their shows out of an attic and a stand-alone garage.

[6] In a Chicago Tribune article spotlighting stand-up comedians, Campbell explains where he gets his material from; "I tell them Jo-Ann Fabrics.

"[7] His routines are described as "fast and funny" in a 2015 piece by the Daily Herald,[8] and Monique Madrid of New York calls Campbell "one of the hardest working comedians in Chicago.

[12] A reviewer from the Arizona Daily Star notes of a 2019 performance, "throughout this immersive autobiography, we, as an audience, laughed, gasped and empathized as the often jovial ride halted at poignant emotional places," adding "the story has been so well thought-out [...] that I found myself too captivated to look away even for a second.