it isn't negative to be negative
This is all about trust isn't it? I don't trust people who are always positive. I can't. Of course positivity is important but always being positive is not good, it's alarming. It implies that you don't make judgements at all. If I am relying on someone to tell me that I am "ready" to go on stage, then I have to know that you would tell me if you weren't. Otherwise I can't trust you.