Try and avoid researching in isolation. I’ve decided to work on a problem this week that I’ve not looked at in fifteen years. Before doing any actual research, I summarized what I had and asked someone who is familiar with the location what their approach would be.
Sometimes all we need is a little guidance or a suggestion which sometimes is best given by someone totally unrelated to the people being researched. And organizing what you know and what you’ve already done sometimes helps you see where to go as well.