Telling yourself you are enjoying an activity can increase dopamine and lead to a larger epinephrine release.

“dopamine is the precursor to epinephrine epinephrine is made from dopamine and that's why if you tell yourself you're enjoying something and because dopamine is so subjective that you can in some ways as long as you're not completely lying to yourself you can get more epinephrine you get more or more ability to push through something and you can sort of reframe it”