If you’re angry, upset, scared, or generally feeling bad, you are probably trying to control an element of your life that you have very little say over. Maybe it’s the weather on a special day, or a decision that’s out of your hands like a job interview outcome.
No matter how much you ruminate about these things, you can’t control them. You’re not going to be able to switch off the rain, and if you didn’t get the job, you just didn’t get the job. Instead of obsessing over the things out of your hands, focus on the decisions that are in your hands.