The returns run on a delay, which is why the exchange is so easy to miss.
The water you drank at eight is what keeps your head from aching at four. The walk on Sunday is why Wednesday's mood held. Nothing announces itself as payment. It arrives later, disguised as an ordinary functioning day.
Because the receipt comes so long after the deposit, it rarely feels like a relationship. It is one. Assume the decent hour you are having now was paid for by something you did days ago and have mostly forgotten.