When a thought inside of you whispers: 'you won't make it', 'it's better if you let it go', 'don't make a fool of yourself', or something similar, how do you react?
At times it may sound like someone who cares for us and wants to help prevent failure or disappointment. At times it hurts deeply because it suggests that we are not up to living our lives successfully and happily.
A commonly used name for this type of thinking is: inner critic. Maybe you've heard of it.