Some days success is just getting through the day! Sometimes it will be survive the next 30 minutes. But survive you will. I happen to be in a better place at the moment and can think more clearly. And I mean literally, at this moment... there are a lot of people here who "get it." It sucks. It is ok to rest and redefine your goals for the day! If you are doing the best you can, you are doing it! You are successful.
I went through about 4 different therapists before I found a combination therapist/psychiatrist that works for me most of the time. Give your therapist some time - she needs to get to know you. And you her. I happen to think trust is earned. Of she is good, she will earn it. But you have to allow her to earn it. She is going to say things you aren't going to like and push when you do not want to be pushed. There are few things more frustrating than wanting help and not being able to find it. Or just not being able to do it. Sometimes the pain just is winning. But, hang in and keep fighting for you! Not for anyone else, for you. You matter. You have worth. You are important. Believe it. Hold on to it when the demons attack. Write yourself notes and stick them in places you will see them. Do whatever you need to do to believe YOU MATTER.
IMHO, if you can get yourself through the business lunch feeling the way you are feeling, I'd call that a successful day!! Go home and rest. Read stuff on this site - this is where I "come" when feeling rotten. It is one of my safe places. Often I am just lurking but that is OK, too. Reading about other people struggling is helpful to know I am not alone. I do have to limit my time here when I am feeling bad because it can suck me into the depression of others and I find myself having a pity party. But, that is me. It has taken me a while to find my balance in regards to this site. But, there is great wisdom here from people who have been there.
First, survival - then surviving well. And you will survive well.