After Macbeth hears the witches' first set of predictions, he realizes that his ambition to become king can come true. At first, however, he was reluctant to do what it takes to reach his goal (killing Duncan). After Lady Macbeth pressures him into it, he seems to find it easier and easier to eliminate people who seem to be in his way, such as Banquo, Macduff, Macduff's children, and his wife.