Worrybucket

Not much.
Foods I avoid are pickles,chocolate and wine. These three are guaranteed to set my heartburn off, especially wine, I just can't touch it anymore.
I take a prescribed dose of ranitidine (Zantac) which always knocks out the burning. I have a hiatul hernia which makes mine worse. The best way I avoid it is to keep my stomach weight down, that helps me a lot. But it's miserable, I understand what you are going through. You just have to educate yourself as to what you can tolerate and what you cannot.