I've also cut the word "hate" from my vocabulary. I find then when you repeatedly say something, you make it more true, or you train yourself to believe it. As such, saying I hate something was extremely counterproductive, and a source of negativity. It didn't matter if it was the seemingly benign "I hate overly-sweetened drinks" or the slightly more sinister "I hate people who say..." Logically, I know it's a figure of speech. But emotionally, I don't like what the word doe: it sets up hard walls and puts limits on me from the get go, whether it's about me enjoying something or tolerating another human being. So I eliminated it and it has correlated with me getting upset much less frequently.
I think this theory holds merit, might just have to do this too.