Frustration. I know I want to talk but I cannot speak myself and I have two or three ways to express my meaning. Such as, I use my iPhone to express my meaning, gestures, a pen and paper or writing, or also with pictures. Everyday in my speech sessions I learn about Semantic Feature Analysis (SFA). You can describe objects or subjects. Some people will be guessing the meaning of what I want to say. Practice everyday and have a good clinician to help.