(Suzanne Kane) Everyone, no matter who they are, inevitably experiences self-doubt. Reading through the biographies and autobiographies of some of the most accomplished, celebrated, famous, talented and intelligent people reveals that each one of them has had their moments of personal doubt. Not only did they wonder if they had what it takes, they worried whether they could persevere despite opposition and setbacks, without support and encouragement, even if they were physically capable of continuing.