For Chinese, I think most of us can be really shy at the beginning. I have been learning English for a long time. However, when I was at school, I barely spoke any English. On the one hand, the speaking skill was not tested at school so the English classes did not focus on it at all. On the other hand, I felt I just did not know how to start. Worrying about making mistakes is not the main issue. It takes time for me to use language as a tool to communicate with people. I could not speak at all at the beginning enven I can read pretty well. But I picked up the spoken skills pretty fast since I had already knew them in a way. I think once peopel reach at a certain level of fluency, they will speak more confidently, no matter where they come from.