If you want to try changing your mindset, you may want to try meditation. I tend to be the glass half empty type of person since I've been seemingly living under Murphy's Law of "if anything can go wrong it will" for a while and sometimes it's hard to get clarity with what's wrong and how to fix it. But at least for me, I feel like meditation (and I mean the kind that specifically works to "train" and "rewire" your brain) really works to give me a more positive mindset and clarity on what the root of my problems are and how to go about solving them. Almost seems like you use video games in a similar way, but with meditation I like how you can just sort of wipe the slate clean, so to speak and basically start with a clean slate.