When someone tells me that I’m sending him a mixed message, it indicates one of two problems. Either I am sending a mixed message and my listener has picked up on it, or I am not sending a mixed message, and my listener has misunderstood what I’m trying to communicate.
In the former case, I need to stop and ask myself why I’m sending a mixed message. Am I confused? Have I lied? Have I changed my position on the subject?