You are getting into voodoo here.You seem to be asking if I knew ahead of time that I would lose $8800, if I would still play to accumulate that $300 EV goal for the day? Ridiculous. Of course not. If you have some ability to tell me that before I leave my home each day, I will hire you. In the absence of that, I play and accumulate my EV, let the wins and losses fall where they may and at the end of the year (represents long-term) my actual win will be right there....reasonably close to "accumulated EV".
"One of those days", "Bad Karma", A "curse" that day? You are voodoo-ing! Unless there is a real reason why that day is negative, you play and accumulate your EV. You are going to need it at the end. Real reasons would include: being cheated. Losing control of your emotions and game (and if this occurs, you might not really be an AP), running out of cash on hand (playing bankroll), and in the case of blackjack, some sort of heat issue. These are solid real reasons. That Lady luck might not be smiling on you that day is not a real reason. That is voodoo-ism.
What if every other day, I lost a little bit early and stopped after the first or second session, or came up with some silly reason like bad karma today and quit early. I wouldn't be reaching my target EV most days and at the end of the year my accumulated EV would be 40-45 thousand instead of 75-80 thousand. And subsequently my yearly wins would also be down correlating to that expectation (accumulated EV).
Stopping prematurely (stop limit) costs money! (see post 239 in this thread). I can explain it no better than that.