This exercise fixed it for me. I was diagnosed with GERD last year, I already had it for 2-3 years before that, but it got worse last year. I got ppis for a couple of months and when I finished all of them it came back worse. Fortunately I found this article, and I started doing the exercise daily morning after I woke up(and still do it). I can now eat tomatoes, food with mint, spicy food etc etc :) I have shared my experience with others and it helped them too
Edit - Changed the link, had posted something else by mistake