The writers job is like solving a puzzle, and finally arriving at a solution is a tremendous satisfaction.
William ZinsserEvery successful piece of nonfiction should leave the reader with one provocative thought that he or she didn't have before. Not two thoughts, or five - just one. So decide what single point you want to leave in the reader's mind.
William ZinsserUltimately the product that any writer has to sell is not the subject being written about, but who he or she is.
William Zinsser