I had a certain problem with this as well. My issue was that I had learned that I only had a person's attention for a very short period of time (thanks mom!) so I had to be quick in getting my point across. What this did for me is made me talk fast and put incredible pressure upon myself. I got over this by understanding that I deserve attention. Yes, we actually grow up thinking that we don't deserve anyone's attention, we shouldn't bother people. It does wonders for the self esteem!