self cred

The internal equivalent of street cred. Believing in your own worth and value. A quote that doesn't use the word but expresses the concept is James Baldwin's "It took many years of vomiting up all the filth I'd been taught about myself, and half-believed, before I was able to walk on the earth as though I had a right to be here."

I was always quiet because I had no self cred.
I didn't believe in myself, I had no self cred.