Cluttered, disorganized writing forces people to work harder to understand your message. And in leadership, the harder a message is to process, the less likely it is to drive action. 4.

The second letter, sent to George Akin Lusk, head of the Whitechapel Vigilance Committee, was received on Oct. 2, 1888. The handwritten note (which began, "From hell " and finished with, "Signed ...