Attitude is an expression of favor or disfavor towards people, places, things or events. It influences choices and responses. There are four components of attitude - affective (feelings), cognitive (beliefs), conative (inclination to act), and evaluative (positive or negative responses). Attitude is like an iceberg, with only 10% visible on the surface through knowledge, skills and work ethic, while 90% of underlying attitudes are hidden. Of all attributes, only attitude can provide 100% success, as the other attributes like knowledge provide less than 100%. A good attitude may lead one to be knowledgeable, skilled, intelligent and hardworking.