A 45-year-old male client experiences a sense of depression because he has not yet achieved his life's goals. His career has not been satisfying. He is still looking for the right job. His wife spends too much money, and his children seem to ignore him while being very selfish. He is tired of all of their attitudes and is considering buying a red Corvette convertible. While obtaining these data concerning the client's feelings about his life, the nurse is able to determine he is experiencing what psychological crisis according to Erikson's stages?