Everyone moves at a different pace and they understand that. They will help you sort through everything. Just be yourself because if it does turn into a session where it truly feels like your having persuade them then they probably are not a good fit. I was all stressed out coming into my first session and she had to delay the session and my appointment was for 11am, but had to moved since she found out her dog had cancer and they were having more tests run at a second vet that same day. Luckily she able to just move me to a later time that same day. For whatever reason finding out that her dog was sick with cancer took all the stress and worry out of it for me. Once the session started I remember saying something about I hope her dog is going to be okay and then we moved right into all the stuff you normally deal with in a first session. Which brings to one other point, the first session is really just a chance for the psychiatrist to get to know more about you, your past, and what brought you in to therapy. Basically laying the groundwork for your future visits.
Mariah