this time i was different

Until year 10 of high school, speech class final, standing in front of people was easy and fun. The speech final was great. Then, in review, my speech was recorded. Upon watching and listening to myself, my life changed; I didn't like what I heard and saw. To finish the class free time, the teacher called upon her favorite impromtu speaker, me. But this time, I was different, I began speaking but couldn't stop shaking. I looked like the man in the beginning of the movie 'scanners'. The teacher was horrified and gently called the impromptu over, the semester was over. Anxiety hits me hard everytime the idea that i may be put in front of people. It took a long time to finish college and only online schools allowed me to complete classes without worrying about the anxiety. At 43, this problem has almost ruined my life. But I am going to beat this and I look forward to any advice and help. Thank you,