I was labeled at a young age - Miss Unemotional, Miss Cool, and that would carry over to my press conferences.
If you feel you have the right key, you try to make some phrase or sound that will fit.
Hollywood is fickle; your career can end pretty fast. If the acting jobs dry up, you have to have something to fall back on. In fact, that would be my advice to kids interested in acting - make sure you get an education too.

