To fear to do something is normal. And temporary. Justifying makes it permanent.
“I feel nervous to speak on stage” is normal. You can feel afraid and speak anyway. You will sweat a little, tremble a little, and then say what you have to say.
But if you add “…because as a kid, I was laughed at by my classmates” you have created a reason to make it permanent.
Now it is not longer a passing feeling, it is a big problem to be faced.
And the weapon we use to solve it is further analysis…which then makes it worse!
Feel the fear. Accept it. Keep moving.