Writing in the sand is as fruitless as chasing fleas and dead dogs. The writing loses focus and washes away with the next wave. Saul lost the focus that kings are indebted to keep. In chasing David from one rocky mountain top to the next ravine, from cave to cavern, he abandoned the priorities of a king. While his kingdom was in peril he engaged in a flea hunt!
Proper eyeglasses or contacts can help correct the first challenge. The second challenge requires a different kind of prescription. Greater focus begins with a couple of essential steps.