You mean something that one is afraid to tell someone?
Yes, this is the easiest way to intimidate yourself and hold yourself back.
At the deepest level it is the fear of loss of love....
Only the fearless dare to expose themselves, completely, naked and vulnerable.
Only the fearless can love truly so at the deepest level, only the fearless dare to love completely.
Perhaps when one has overcome the fear he will find that the dark secret was no more than a phantom....that the power he is giving the secret is not worth the discovery that he can be loved, unconditionally..
I do not know if this makes sense..usually, when I answer a question, I just type what comes..