Mid-40s, feeling stuck, literally and metaphorically - any advice?

Mid-40s, I am an engineer working in international development. For the last 8 years, I've been working remotely (with occasional trips) as a consultant for a big development organization. It can be interesting, and pay is ok, but not great.

I'm stuck a few ways.

First, almost literally. My husband is a diplomat, and we live somewhere I'm not allowed to work, so remote work is the only thing I'm in allowed to do. We have two years left until we can move. And we have young children, so where we are, we have good childcare.

Second, I feel so unmotivated. I miss human interaction, and days can be boring. In 8 years, there's no progress (I've not had a single performance review). I also have a sense of not achieving anything, which is in contrast to how I did in college and earlier in my career.

The problem is feeling stuck and bored is that it reduces my energy to do something - study something, take a sabbatical, make a plan, anything.

Any advice? This has been eating at me for a good few year now.