Best mental health advice I received when I was struggling was from my dad, he advised to take a day off completely from all mental stimulation - no screens, no reading, no exerting mental effort, instead either go for a walk out in nature, or sleep. It helped immensely in just a single day.
That's good advice
Not just good, more importantly - effective!
Turns out - 'Touch grass' - is not that bad of an advice. It's just wisdom condensed into a meme..