Speechless! (at times)

All my life, I've struggled with being able to explain myself. My thoughts, feelings, emotions (at times), a book or movie plot (maybe not understanding it?) you name it. I wonder if this is part of my ADHD, or is it something completely different? I'm curious to know if anybody else has struggled with this, and if so, what are your coping mechanisms or ways of getting around this? I've thought of drawing the picture out on paper, but I SUCK at drawing, or art in general.