Brain-Mouth coordination

My brain works faster than my mouth and no one seems to understand my words. How do I communicate properly to people!!! It's getting on to my nerves that they cannot understand simple things. I am being pushed to break my sentences down further and further for all of them. Argh!!!! Such wastage of time. Mainly, so many misunderstandings that I am dealing with, day in and day out. Help. Argh. Help!!!