Easily influenced by actions? Not necessarily. Influenced by their thoughts? Yes, because I respect my two best friends and their beliefs, and if they swear by something, I might give it a try.
Almost lost one friend this way. She kept calling me "annoying", and telling me everyone that thought I was annoying-like it was her personal mission to let me know I'm annoying. Stop talking to her, then I take one of her phone calls: cries and apologizes. I HATE IT WHEN PEOPLE CRY< I CAN'T STAND IT!
I was when I was young. Now, I just don't care what anyone thinks. I've found that real friends are few and far between and that family is more important. I don't have to impress anyone but God and the guy on the other side of the mirror.
It's really sad tho to notice how many drop away from SH, and almost nobody says farewell or leaves a way of maintaining contact!