Did “Oh, Crap” method work for you?

I’d love to hear some personal stories to hype myself up for potty training. We’ve been putting it off, and our daughter keeps getting diaper rashes. I really feel like I dropped the ball. She’s only 26 months old, but the doctor keeps guilt tripping me about “how late” I am. A friend gave me a PDF of ‘Oh, Crap’ and I just started reading it yesterday.