I truly try to be honest. I'm almost pathological that way. But, I will lie for sure if it gets me out of trouble without hurting anyone else. But that goes more for a working environment than anything else. With friends and family and anyone that claims to have good intentions, I will be brutally honest. And that's why I don't have any friends left
That said, honestly, I don't care if people lie to themselves. Everyone has his cozy little lies that he tells himself to not feel like a failure. Assigning blame to the wrong side, resenting people to mask his faults, negating the whole thing - this is a default setting of the human race. If I answer to your question with a resounding "Yes" I would feel like a hypocrite.
I know, I'm off the point. I'm talking about "little", personal lies. But that's because I see them as bigger than the large societal lies that only show how easily we can be coerced with nonsense and helped by a larger set of values to direct our personal demons in a way that will benefit our ego. Massive lies work on principles of mass hysteria. It's always personal. People lie on mass and believe the lies on mass because they can't cope with their personal truths.