After two years, a lot of work, and a number of weeks towards the end that all coalesced into one and during which I only left home to return books to the library, I finally submitted my master's dissertation yesterday morning. It's been almost nine years of constant study to get to this stage (2 years adult access, 4 1/2 years BA, 2 years Mres; all part-time) but it's been worth it.
Only one more step now to go, but I'm going to take a year out before thinking about submitting a PhD proposal.
It's been a tough few years, but I wouldn't trade it for anything in the world.