Kailyn Lowry has had a tough life — and she's not afraid to talk about it in her new tell-all, Hustle & Heart.

In one segment, the Teen Mom 2 star recalls growing up with an alcoholic mother, Suzi Irwin, which led to a troubled childhood and teenage years.

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"The best of my mom's love went into the bottles she drowned herself in day in and day out. The love that should have been mine went into bottles and empty cans that were tossed in the trash and carried away. I was left with whatever spilled, and it wasn't enough," she explained.

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"Not enough to numb the embarrassment when she showed up at my elementary school reeking of Jack Daniel's. Not enough to dull my hurt and anger when she disappeared and left me on my own for long, long stretches of time. By the time I was a teenager, no one had to tell me to follow my heart."

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Kailyn went on to explain how this neglect caused her to "act up in school, smoke too much weed" and "have sex too young."

The mother-of-two also revealed in her book the details that led to her split from her husband of four years, Javi Marroquin. She also put Teen Mom 2 fans into a frenzy when she hinted at the end of the MTV reality series.

Hustle & Heart comes out November 22.

See how much the cast members have changed over the years in the gallery!