Tell me about your experience as president of the student union in 2 1 1 university?

I am a good student, with a low profile and good academic performance, but I am not good at communicating with others. I didn't lose face in the activity, but my grades and overall comprehensive evaluation were surprisingly good. The teacher suddenly elected me as the president of the student union. For me who has no management experience, it is too sudden to refuse. I began to fantasize that I was speechless in front of many classmates. Oh, it's so stressful. I can hardly breathe psychologically. Even dreaming is the object of discussion among classmates. I got up in the middle of the night and talked to myself in the mirror. Then I talked to myself in the mirror whenever I had time. My classmates think I'm stupid, but my heart is much calmer. Whenever I go on stage, I fantasize that I am in front of a mirror, so that I can calm down and pronounce every word clearly and loudly. I really didn't think I could do it so well. It really feels wonderful, as if I have many subordinates.