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CrazyMusicLover If I might mention, a few things that helped get me off a flatline where self consciousness and fear held m back were public speaking classes with understanding audiences and good instructors. One was a college course, another was an Air Force instructor program and a third was with large corporate employer. All three were pretty extensive but for me it took all three. The semester long college course was a good starter in that I found myself in a class where half the class or more had stage fright or confidence issues. On like the very first or second class day when we were asked to individually walk to the front of the class and introduce ourselves the very first lady (we went in alphabet order) walked to the front of the class of about 15, turned around to face the class, and said "Ah", then turned beet red and again said "Ah", then said "I cant do this.", started crying and ran back to her chair.
The outpouring of sympathy from the rest of the class helped dry the tears, and the gentle reassurance by the instructor, with a "don't worry about it, it's why we are here" and "lets just try again in the next session." The very same thing happened the next class session. In the third session she got to the first "Ah", then started the second "Ah", but caught her breath and with a spark of control that came from somewhere, she slowly told everyone her name, where she was from, and second by second her voice returned to a conversational voice, and she filled the the next two minutes as if the first two attempts had never happened.
As she returned to he seat the class applauded her; she blushed and acted embarrassed by the attention. The sensitivity thing can go both ways.