Who can't help but think about time during this season, when we turn the calendar page to a New Year? One saying about the benefit of time is that "Time heals all wounds". On a less metaphysical level-- perhaps more mundane, but nonetheless very beneficial for the practicing painter-- the passage of time often allows us to see, and therefore to correct, problems in our paintings.
I'm not an expert on how the human brain works. But I do know that it's very common to get "too close" to a painting--to be so wrapped up in the struggle that you lose sight of the way forward. In those cases, it's smart to put the painting away for a few days, and work on something different. No peeking! Miraculously, when you pull the painting back out,