I want to do a drama gcse but one of my best mates sed i shouldnt cuz she thinks im shy when im not HELP?

The reason i want to do it cuz i really enjoy the lessons and i hav
been gettin gud levels in it.
One of my other friends think i shud cuz she thinks im gud at acting
and she is an actress she is gonna star in a feature film movie thing.

I want to be an actress or drama teacher as well so HELP!!