I was diagnosed in September but should have been diagnosed almost 7 years ago (maybe I was diagnosed and never told, it was at the same time my dad died so I don't know). I will start DBT in January. I too found that the diagnosis was helpful, everything started to make sense to me.
I am feeling lonely too. My husband works a part-time job evenings at the movie theatre and so most nights it is just me once my son goes to bed. Not that an 8 year old is great company anyway.
I am on disability and expect to be on it for at least a couple of years. My husband thinks I can go back to work in a few months but from the sound of things I will never work full-time again.