Wikipedia accurately sums up Brosh's style as a combination of observational and absurdist humor. Brosh's reflections and admissions are like real life, but funnier -- and then you realize this IS her real life, and that makes it even funnier. Or sadder. Or both. Like the time her mother got lost in the woods with her two young daughters and tried to make a game out of it.
Though I love the entire book, if pressed to select my favorite portions, I would have to say The God of Cake and Thoughts and Feelings. In the cake story, a very young Brosh tells us about the time she was determined to eat her grandfather's birthday cake. Nothing could stop her, no matter what her mother said and no matter where her mother put the cake. That section reminded me, in part, of Cookies from Frog and Toad by Arnold Lobel.
I read this book while on a movie set. The actress playing my sister was very interested in what I was reading because I kept laughing out loud. I proceeded to read The God of Cake to her - editing out the bad words - and she too dissolved into giggles. "Cake. Cake. CAAAAKE!" I also shared some of the dog stories with her.
In many passages, Brosh speaks quite frankly about her struggles with self-perception, motivation, and more. She considers what she knows she should do vs. she wants to do vs. what she actually does. There's her internal monologue, right there on the page, with crude (not naughty, but simple) drawings created in Paintbrush. Brosh finds both the humor and the agony in simple and complex situations, and I give her a hearty high-five for her willingness to share her pain and her delights with others. If you like Natalie Tran's communitychannel vlog or comedians or sitcoms that find the fun and the shame in everyday situations, then you should check out Allie Brosh's stories.