Optimists tend to have selective perception. (e.g. your partner is pregnant. Suddenly there are pregnant women everywhere, they were always there, they had no significance so you just didn’t notice). Optimists opt to see the good and minimise the time they spend thinking about the bad. Which means they get over difficulties faster because they don’t ruminate. Don’t keep running the movie in your head of how awful it was. Learn what you can from the experience and then work at forgetting it. Bad things happen. Get over it! Optimists are both happier and more successful. Learn selective perception/amnesia.