A reward in advance of an action. A pre-reward.

Got the covid-19 vaccine

(Noun): something you do for yourself (or give or allow yourself) now for something you're going to do later. essentially, it is the outcome that happens before an event takes place.

(Verb): the act of presenting yourself with and partaking of a preward

You often try to set up rewards for yourself, so that you have something to look forward to while doing tedious work.
However, much more often, you end up using up these rewards without even having started working.