Basic Writing Tip #15: When you get stuck in a difficult scene, and your brain won’t produce a solution, get away from the computer or the pad of paper and go do some mindless chore, such as scrubbing a floor or shower walls. When your mind has nothing to focus on, it will likely, out of sheer boredom, burrow into your story problem and solve it, just for something to do. I’ve come up with innumerable solutions to difficult character or plot problems in this manner. Sometimes I do it deliberately, sometimes it just happens.
Taking a walk in some well-known area, where there’s nothing much to look at, can accomplish the same thing, but remember…to trick your brain, you have to BORE it into problem solving!