I have had frequent belching and heartburn problems for many years, often causing insomnia. After a lot of time trying to determine which foods were the cause,

I have had frequent belching and heartburn problems for many years, often causing insomnia. After a lot of time trying to determine which foods were the cause, I ended up noticing the elephant in the room: food actually matters very little, my (subjective) stress level explains like 90% of the problem... if I'm relaxed (e.g. on vacation) I can eat practically whatever I want without getting problems, if I'm really stressed I'll get them even if I eat like a Spartan. In fact, having a partner is the single best thing that has happened to my stomach and my insomnia. She reduces my stress levels and alleviates the symptoms very noticeably just by being by my side. Sorry if it sounds corny, but for me this is an observable reality. The problem with all this is that, of course, stress is often something outside our control. Knowing what I know I try to keep it at bay as much as possible and take things easier than when I thought it was a food problem, but if there's lots of work and deadlines it's not like you can just wave stress away like you can avoid a given food...