Hey abstract-
I agree with others that if you don't desperately need to sell your gear, hang onto it for awhile. I'm a musician myself and just have a couple observations. First, it is really hard to muster creative musical energy if you don't have much energy to spare. It takes energy to be creative and from the sound of it you are using most of yours up these days with work and lifestyle changes. I have always found it difficult to preserve enough energy for creative stuff when work is pretty demanding. It has been my experience that this is kind of a cyclical thing, though, so it will probably change again sometime. I have often felt like being away from it for awhile actually served to recharge me when it swung back around again. I think shijing has it right in advising to give it a rest if that is what is happening right now.
Also, if and when you do get inspired to pick up the guitar, maybe try exploring some alternate tunings. Standard tuning has been used to death at this point, even though it is still one of the most adaptable to all different keys. Most of us are pretty dialed into the sound of standard on the guitar, so changing that up might kick-start a whole new direction. Keeps you on your toes with finger positions, too. If you play by ear/and/or compose, this approach might well be a whole new universe to explore. Maybe you've already tried this approach, but it has worked for me in the past, for whatever it worth.