I can tell you a common scenario where people often feel nervous or anxious but end up having a positive outcome.
One common example is public speaking. Many individuals feel extremely anxious and paranoid about speaking in front of a large audience. The fear of being judged, making mistakes, or forgetting important points can be overwhelming. However, after mustering the courage to go through with it, they often find that the experience went much better than expected. The audience might be more supportive and forgiving than anticipated, and the speaker may even receive positive feedback for their presentation skills.
The fear of the unknown and the anticipation of the worst possible scenarios can be powerful drivers of anxiety, but often the reality is much less daunting than our imagination leads us to believe. Stepping out of our comfort zones and facing these challenges head-on can lead to surprising and rewarding outcomes.