"Sher identifies a personality she calls The Scanner: those whose multiple interests take them in so many different directions that they lose themselves in ""goal"" ""paralysis."" She identifies seven different types - ranging from the Serial ""Specialist,"" who learns all about one subject only to get bored and move on to the ""next,"" to ""Sybil,"" who has so many areas of interest that she can't finish a thing - and teaches dozens of powerful techniques to turn this liability into a unique ability."