I think that most days, I don't lie at all. I actively try to avoid lying; I have a long history of mental health issues, so I used to lie a lot about how I was doing, to avoid worrying people, but that turned out to be counter productive. If someone asks me how I'm doing, a "eh, getting by :/ " or similar can be surprisingly informative. I've been getting better at gesturing at my general not coping in a way that's not going to give any more information that is appropriate or necessary. I've found that people actually worry less this way.