Sensory Overload from an Overactive Mind

It seems I've been overstimulating myself with my racing thoughts much like external stimuli.

I realized that if I'm not doing any active activities to keep myself focused, my mind enters 'wandering' mode which is basically the Default Mode Network. I learned that the DMN is particularly hyperactive in ADHD brains.

If that's the case, then I should stop being so passive this whole time. I should at least be active physically and mentally during the day, and be passive in the night before sleep.

Perhaps the biggest enemy to my attention and mental health isn't social media or other distractions. It's my own hyperactive and aimless impulses.