People who sincerely believe they have nothing to hide? Will still lie to you. Get used to it. Expect it. Assume you are being lied to until you have proof of the truth. Then double-check the proof. And in this we can be confident A small truth is better then the greatest lie. And in the reverse, Every lie has some truth And the worst lies? Are the ones we tell ourselves.
I am brutally honest with myself. With no else. Not completely anyway. But it’s always shocking to find I have lied to myself. When long ago I promised myself I would always be honest with me.