What do you like to do? Check out new restaurants? Try a new hobby?
For me, learning to mediate was huge. It helped me to find space within myself, so that I could observe the obsessions within my mind without being caught up in them. That might not make sense, but it starts to make sense with a good meditation teacher.
It sounds like you're frustrated with your solicitor, too. Perhaps creating a plan for how to move forward with the divorce, informing her of it, and then bugging her to stay on schedule will help you to feel like you're making progress, too.
If you're going to be leaving Vietnam relatively soon, what about making a list of all the things you would like to do and places you would like to visit before you leave, and then start checking items off your list?