I would set the Auba thing aside because that is less motivational stuff and more trying to address personalities in the locker room stuff. That is man management, and I get the sense that Arteta genuinely cares about his players' emotional states.
As for the hand rubbing circle, "it worked" is probably too much to say there (though I am only through ep 2 with the drawings, the speech before the first derby day, etc ). There could be any number of reasons that Arsenal won a tough game at the King Power that had nothing to do with his attempts at psychological fortification before the match.
We also see when it doesn't work, like the YNWA stuff in the preview.
Is it possible that this stuff works for some players? Sure. I am just saying that I am skeptical. If a grown man drew a cartoon heart and brain holding hands to remind me to play passionately, but also within the plan, I would be insulted.