I refuse to do what I think of as "building for inventory" -- working on things that I don't see a clear downstream consuming process for -- and I try to make

I refuse to do what I think of as "building for inventory" -- working on things that I don't see a clear downstream consuming process for -- and I try to make everything I bother with perfect and part of a flow process (never one-off). I am one of the most productive people in my office, while my coworkers are always busy, busy and can't seem to get things done quickly.