A limit on honesty and dishonesty? Lyin' and being truthful, huh? I don't think there's a limit and honesty as a virtue are a part of integrity which everyone should work at. Yes, people being honesty makes life easier whether the consequences are negative or positive, at least there will be understanding.
I don't get what you're asking though. Whatever it is you're trying to express though, I'm right in you're corner to talk. Take care man!
As long as being 'honest' here doesn't mean saying what you think at all times, then sure. I think honesty is good, and society could use a lot more of it. I think knowing when to not speak is as good a skill as learning how to honestly speak.