There are many ways we could regret for not taking a decision that would have changed our lives. Making g profits is what everyone has been anticipating for but some times, it will be good for us to not stress thing and take outcome the way they hit us so we don't have to ovr think and make stupid decision due to emotions.
Even though making some kind loses might be very painful for us, we ought to be smart and help ourselves not to become victim of circumstances. What we lost today can always be gained tomorrow if we are strong and focus.
It will help you a lot when you know when to accept the outcome, as if you keep dwelling on it that regret inside you may push you to re-try without thinking of the situation, and most of the time when you are in such kind of position the decision you may take will lead you to lose more, better to assess and analyze and take some time to cool yourself before thinking of returning.
Fresh start may give you much better analysis and may lead you to pick the right one with good knowledge of potential outcome.