It's not always strictly about secrets, in the traditional sense.

[Lies were certainly not his death knell before; it was about the lies he told himself, the parts of him he didn't know how to clarify, the identity and self reflection that he'd trained out of himself not to feel so alone.]

You also must know yourself. The truths of your identity to your selfhood. Lies we tell to ourselves to keep us going. There is... little margin for error.