Yea, I do have fears like this, mine has to do with making a presentation or speaking in front of a crowd, I'm a very reserved person but unfortunately once in a while it becomes necessary to explain or give a talk on a particular topic to a group of people. In such cases I have never found it easy. Although I try to tell myself I've made some improvement recently because these cases have become more frequent but I'm yet to be as confident as I would want to be in this instances. What has helped me so far is also making myself realize that I these instances will keep coming up and also preparing myself mentally for when they do.