I started a new job a few months ago. It's in a corporate, albeit relaxed, environment which is new for me. 

I can speak well in meetings with my small team but I cannot for the life of me act normal in meetings with more people. Once I begin talking, I somehow end up saying things I don't mean to say. 

I've done the following since starting this job &amp; every time my mind gets over it, another one happens:

* During an ice breaker I said I like true crime but then I elaborated that while I find it interesting, I'd hate for something like that to happen to me.

* During a different ice breaker, I said the area where I was from. Someone in the chat wrote the specific city because we had a prior conversation about the coincidence. I then proceeded to tell everyone that we had gone to the same school but at different times. Because no one saw the chat, they were just silent for like 10 seconds until someone called the other person old (which I also didn't intend by my comment).

* I needed to gain credentials to a program a client uses and my name was on the meeting agenda. When we got to my part, one of the clients said "Who is miss snowdrop?" even though I've now been there for a few months. I then proceeded to say in a high pitched bubbly voice, something like "Hiiiiii (*wave*), I'm one of the ____ at ____ . I need access because_____." The client then explained they got confused &amp; thought I was someone new on their end. I just said "I understand" because I was trying not to overly share any more. 

I know I'm still very new in the grand scheme to the job environment. I just hate replaying these events in my head. I do a really good job of getting my thoughts across when writing but struggle so much when I need to speak off the cuff.