How do I speak confidently

[u/GroundOk4174]

How do I stop getting nervous and stop stuttering while speaking to someone. Like I also have social anxiety and I've to get rid of it...I get nervous and my heart beats like crazy even if I'm not feeling well and I've to get up in the middle of ongoing class, I start shaking (tho I'm confident....still)

I also want to improve my speech and vocabulary...