“A man is never more truthful than when he acknowledges himself as a liar.” Mark Twain
Sometimes we tell little white lies to avoid hurting someone’s feelings; sometimes we lie when we said we have done something (then get it done to be true.) The latter is not a good idea or practice. But the worst is when you lie to yourself because you begin to believe what you think.
Personally, I would mess up trying to keep track of lies. With the exception of an occasional white lie, “Your new outfit is flattering,” I tell the truth. If you never lie, you never have to worry about what you’ve said.