I've noticed a very consistent pattern over the years: any time someone mentions some device, or dietary choice, or habit, etc, that has had a large positive impact in their behavior, it's almost always a recent change. A few months, maybe half a year or a little more. It's been a pattern in my life too.

I do hope it's a lifelong positive change for you but I've just gotta discount any glowing reports that come from a recent change like this heavily.