does every person with aniexty act different.

when i have said i feel nervous about something like talking to some people or starting a job or something like that .most people say to me thats funny you was talking a min ago ,or you dont look like you are i have found if i feel aniexty coming on i cant concentrate, forget things ,talk then go quiet, and sweat but others tell me i dont feel that way and i have it also .does if differ from people to people and how they deal with it also.