What does the phrase “that trap this go-round” mean?

After mulling the book over during the next couple of days, I came to the stark realization that every single previous attempt I had made to lose weight involved cutting down on my overall fat intake, avoiding saturated fat in particular, eating lots of “healthy” whole grains, and counting every single
calorie I put in my mouth. While this way of eating resulted in some initial, nominal weight loss, it always ended with my going back to my old eating habits and ultimately getting right back to the weight I was before I started (and eventually even heavier). I wanted to avoid that trap this go-round,
and the low-carb, high-fat diet was the one weight-loss strategy I had never really tried before. Although I’d said just five years prior that I’d never go on the Atkins diet, here I was, primed to make it my New Year’s resolution to lose weight on the famous low-carb approach. (Keto Clarity)
What does the phrase “that trap this go-round” mean?