Any incremental improvement is worth it, IMO. Think of it like the flip side of the swiss cheese security model.
My intentional mindset and positive thinking don't make my ADHD go away. But maybe they give me that last bit of motivation to get out of bed one day, or they flip the script and remind me that whatever activity my family wants to do with me this evening is way more important than that spare bedroom I finally started cleaning after several years.
When it comes to mental health and enjoying existence, never stop giving yourself the best chance you can.
We children of the 80s were out there in them streets, walking and biking to our friends' houses and dodging the cars. Over the years our skills grew, and the numbers were finally on our side. And while it was sad on the rare occasion that we lost a friend to the streets as if they were an Oregon Trail character, it did help the numbers even more!