Cass30, I have a really full on job and have really struggled both physically and mentally at times. I find the more run down I get the harder it is to cope and the worse the symptoms get, it's a vicious circle. And you have kids to deal with so there is no break.
Something that has really helped me and changed my life is a book by Jon Kabat - Zinn called 'Full Catastrophe Living'.
Hang in there you can do this, you have strength that you never knew you had. It may not help today but this short video often gives me a lift
gratitude