person A: My took me white water rafting with him last week. When we got to the river I started having second thoughts.
person B: I've done that before. Getting over that initial fear is really hard. But it's fun once you do!
person A: I know_comma_ but since it was my first time I didn't know how to act. My mind started to go blank and I started to sweat profusely. 
person B: I understand completely. It's that initial anxiety. It's a scary thing to do!