When I started, I didn't notice it as a problem, I thought "I am nervous only", but when I understood that was getting worse, I thought "this isn't normal". Mainly because I did not have that problem before, yes, I was always shy to talk in public, but not to show this problem, mostly just to not want to talk. Probably, if it would be a problem since kid, It would be harder. Then at some point, I thought" I didn't have this problem before, I should go out of it ", and is when I started trying until I did it. Yes, I am still shy while talking in public, but without the problem.