When people result, they look at whether the result was good or bad to figure out if the decision was good or bad. - Annie Duke

Being forced to quit forces you to start exploring new options and opportunities. But you should start exploring before you're forced to. Even after you have found a path that you want to stick to, keep doing some exploration. Things change, and whatever you are doing now may not be the best path for you to pursue in the future. Having more options gives you something to switch to when the time is right. Exploration helps you to diversify your portfolio of skills, interests, and opportunities. A diversified portfolio helps to protect you against uncertainty. Backup plans are good to have especially because some backup plans can turn out to be better than what we're already pursuing.

Chess, for all its strategic complexity, isn't a great model for decision-making in life, where most of our decisions involve hidden information and a much greater influence of luck.

Optimism makes you less likely to walk away while not actually increasing your chances of success. That means that being overly optimistic will make you stick to things longer that aren't worthwhile. Better to be well calibrated. Life's too short to spend your time on opportunities that are no longer worthwhile.