It's known that mental toughness is a big part of distance running performance. Getting easily bored, I need external motivation. Being a stupid man-child heavy placebo responder, I'm convinced that the music playlist can significantly improve your performances. Indeed, it gives the mindsets that help you to cover the distance.
These are the 3 mental images/mindsets (I figured out so far) that work for me, with an example for each one of them:
Optimal timing and ratio for each one of them in the playlist is yet to be determined, and most likely depends on the running distance.