Nano,
I will saying confiding in a few close friends has been a lifesaver for me. I tend to isolate and not like sharing my problems- but, for my mental health its been good. Also, I don't think it does our children any good to "hide" their problems.
I know exactly what you are feeling about family week. I did not want to go- felt like I'd done enough for my DS. My DH had work obligations and was only able to do part of it. However, I went and I did get a lot out of it. Probably the best part was connecting with other families that know EXACTLY what you are going through. I still keep in touch with several families that I met at our family week.