Disconnected

As most of you know, I've been injured, partially healed, moved , changed jobs, and had to put my grip business on hold for an unknown time period. We still haven't gotten "moved in" ie: unpacked\organized in our new place, and tonight we went shopping for a new mattress and a few odds and ends.
As large and important as a mattress purchase is, all night I've just been sort of "drifting"-I can't seem to focus on the task at hand and I really don't care. I just feel like I'm watching a boring sitcom that I don't like anyway. Has this ever happened to you guys\gals? It may well be just sheer exhaustion as I've been working 10-14 hrs a day for 6 days at a shot for 5 weeks now and I'm fried. The hours aren't all that bad, but I haven't had to deal with "The Public" for a long time and a lot has changed since the last time I held this position-people are much more impatient, demading, and flat-out ruder than they used to be. We're looking for help but the job pool is extremely, ahem, "scummy". I haven't fired a gun since I started and I'm going through withdrawals, but I'm too tired to pursue it.