Regular, frequent study with the proper materials is one of the lesser-known secrets to finishing training and passing all the exams to become a pilot.
The knowledge necessary to pass the written exam isn't trivial and needs to be mastered because it will also prove necessary during the oral exam. The FAA isn't flippant about letting just anybody fly airplanes around the sky. People who start flight training and think they can just "fake it" will be unpleasantly surprised. Regular, frequent study with the proper materials is one of the lesser-known secrets to finishing training and passing all the exams to become a pilot. On the bright side, it's fun, interesting and useful in other areas besides flying.