John on Facing His Struggle with Diabetes

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John has long struggled with diabetes, but he didn't want to do anything about it at first. "I've known for a couple of years that I was diabetic, but I ignored it," he says. "It wasn't until I was nearing the level where people go into a coma that I took this thing seriously."

Here, John opens up about the everyday challenges of coping with the disease—especially his frustration with trying to get his blood sugar levels under control.

Tune in to The Book of John Gray every Saturday at 10/9c, only on OWN.

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