Performance Anxiety - Epic Fail

I'm still trying to process what happened yesterday, it feels really surreal.

For two months I've been looking forward to my first real film role. Shooting started this past week. I had shot a few scenes already this week but they were mostly MOS with no dialogue, reactions only. One particular scene pushed me to my limits in using my emotions and I nailed that (see Pushing the Limits). But yesterday I shot my first scenes where I had dialogue and that's where it all fell apart.