Being fat was absolutely 100% my fault. I've never been one to "beat myself up" about it, nor have I ever been one to deny that I had a terrible relationship with food.
I liked to eat in bulk, I made sh!tty choices, and I ignored common sense more often than not. I wasn't depressed, I didn't eat emotionally, I had no health issues, I was simply stupid.
But I fixed it. That's the bottom line.