When I was at school I avoided speeches at all costs, and was pleased with my cleverness- right up until I became a teacher, and found lots of the preparation for class delivery gruelling. I explain this to my students now, and I tell them speeches get easier with practice, and starting early makes more time to get it right.
After 19 years of teaching, I can say hand on heart that students DO get better when they try, ARE more confident when expressing themselves verbally and can become proficient at getting their points across clearly.
We are constantly challenged in life by things we fear. Facing up to such tasks, breaking them down and overcoming them is part of life.