I started having a similar experience this year and also started feeling better while on vacation. When I returned home and it immediately got worse again I realized my mattress was part of the problem (the symptoms were often the worst in the morning, though they persisted all day). It was not a terrible mattress, but over the years had gotten a little saggy in the middle. I bought a new mattress and while, the problem hasn't completely gone away, it has gotten a lot better.
But still, I probably would have to sit down to work because it would be too dangerous to walk around while concentrating on something else. Maybe standing or lying down would be an advantage.