When I lie, it's most often a lie of omission. Are you more of a falsehood teller? Or do you lie out of ignorance? Or is there a particular subject you're likely to lie about? Or a person who you tell most of your lies to?
Do you always tell the truth? If yes what type of lie was that?
Lie I tell most often: “I'm fine.”
It is easier to do, and easier on the conscience to lie by omission, so that's the kind of lie I do most often, which is mostly to smooth things over in social situations.
Rather than telling the truth, which would require me to talk about my mental health and current state, and face possible stigma, I'd rather just lie about being fine.