((((scared)))). I can feel your pain.
Is there a meeting in LA you can get to tonight; I realize that it is a big step for you but it could be time to step out of your comfort zone - not easy, I know, but vital, perhaps.
If you can't get to a meeting, I hope you can end your business day, pick up some healthy food, and head straight back to your hotel and get some much needed sleep. (If there is a mini-bar in your room, maybe you can call ahead and ask the staff to empty it before your return). You won't be the first one to make such a request.
We are with you, scared, and solidly in your corner.
It's going to be okay, I promise.