What's about to come

I have an intensive outpatient period coming that lasts for two weeks. It starts next Monday and it lasts everyday from 8.30 till 15.00. Fridays are free so it's only 4+4 days. There are max. 6 patients at the same time and everyone gets assigned their own nurse. The idea of the period is to focus on a certain goal that the patient wants to achieve with the help of the group and a variety of professionals such as a psychologist and a youth councelor.
During the day there is a group session, a private meeting with your assigned nurse, communal activity and also free time to spend as you like. The entire period is planned together with the patients and the activities can range all the way from playing games to working with emotions.

I am extremely anxious about the period since I have no idea how it's gonna go and social situations are my biggest nightmare. It's very hard for me to see myself going to an unknown place full of unknown health care workers and teens going through similar things that I suffer from.
I look forward to go there, because I truly believe that it's gonna help me but I'm still terrified. This is one of the biggest challenges that I have had to face and the period hasn't even started yet. I just need to prep myself as well as I can and just hope that I won't pass out at the door.