Although I am able to control my anxiety quite well, even when I am the speaker at the SMC meetings, sometimes I get nervous. But the more we practice, the better we will get at it. It’s just a matter of practice.
And I’m really convinced that public speaking is VERY important, especially at work. Being a good speaker, to smile while speaking, showing enthusiasm are really important. And these qualities will make you prosper: your boss, colleagues, clients will like you more. If you and somebody else are the only two candidates to a promotion, and both candidates have the same qualifications, but one of them has the speaking skills that I’ve just mentioned, there is a very high chance that this person will get that promotion (sometimes this is true, even if this person doesn’t have as much training; it’s not the first time I see this happen).