It is actually is what you asked for, though maybe not worded in a way that you expected. Mental clarity is a key to a project and project management, and I have found one of the best ways is to get away from doing the project. Exercise or other activity has other benefits, but I find that part of my thought process will revisit the project while I am involved in something else and this section of my fringe consciousness often finds solutions for me or points to the next road markers I need to be aware of.

I have also found that visiting colleagues working on other projects during my projects helps. I am still thinking about the job at hand but my direct focus is on them, this refreshing of the active consciousness has helped in many large scale projects and is a non technological factor. I found that in projects where I give myself very little away time, the blinker effect gets in the way.