It’s easy and natural for you to think that fear is bad, but when looked at from another angle you can realize how clarifying it can be.
Imagine you are in a new relationship. You send an edgy text and the wait for their reply fills you with fear. Fear that you may have said the wrong thing and screwed everything up. This fear is a good thing. It wakes you up and makes you alert, paying attention closely to how they handle the situation. You can then later think about what you said related to their reaction and determine if it was the right thing to say. In short, it makes you pay close attention to the result of your actions. The lessons you learn from these small fears will make you navigate the relationship with more intention in the future.