I'm not able to participate in the class as I get too nervous when I want to ask/say something. I know nothing bad is gonna happen to me but I start shivering, and my voice also becomes shaky. I've had this issue for quite some time,but I got away with it, as I my participation was not required, but now I'm sick of this. I try to stay calm but I still start shivering and I'm not properly able to say what I want to, even if the sentence is well framed in my mind. What should I do?
(PS: I'm 19 years old)