You can agree with the idea that you need to know your goal and still be bad at figuring out what the goal is for any given piece of communication. I'm sure of this because I see people communicate with each other in absence of a clear goal all the time, in business and in life.

No matter who you are or what you do, good communication will make your life run more smoothly. We can all be better communicators if we put in the time and effort, and especially if we learn from the right teachers.