There is a saying that activity should not be equated with actual progress. This holds true for the most parts. However, as opposed to not doing anything at all, even the most minute of activity can sometimes feel like a big win. Even when it isn't, I believe it necessary to at least give the mind some semblance of forward movement.
I think consistent forward motion is very important. An idle mind is the Devil's playground. I try to reflect on the times I've been idle and it goes without saying that something is amiss. So many vices can easily set in, not to mention the feelings of not having accomplished anything meaningful. I've been getting that a lot these days as I get older, and am hopefully trying to correct it before it is too late.
However feelings of accomplishment comes with quite the price tag. There is a lot of effort and consistency required, as well as some very underrated sense of direction. I think we very too often underestimate what a sense of direction brings but misguided effort is a very common example that arises from simply wanting to be active.
If it doesn't in any way help the bigger picture, it probably isn't worth it. In the same vein, even if it does help the bigger picture, it must be done consistently enough to see long term results.