What if you lose interest in your own forum?

When I first started my forum, I was constantly involved in it, making dozens of daily posts, promoting and advertising. It became a full time job, taking away from every other part of my life. Time being what it is, there was only so much I could do before I had to return to my regular work and since then the forum has gotten less of my attention.

Now I am involved in wholly other activites which relate very little to my own forum. It's not as if they are compatible. And, I would love it if they were.

I'm struggling to stay interested in the forum. As it is going, I could just as easily shut down my forum and not miss it. Though we get regular forum posts, so it's not like the forum is inactive. I just don't feel involved in the forum anymore. There is no excitement, not to mention no time. I am not sure how to fix this situation so that I can get plugged back into the forum so that it correlates with my current projects now.