Final answer:
Janet is likely to continue experiencing a sense of regret or longing for the academic opportunities she did not pursue, unlike Preston who took proactive steps to fulfill his original career aspirations.
Step-by-step explanation:
Based on the context provided, compared to Preston who went back to college and obtained a degree in elementary education, Janet will probably continue to experience a sense of what might have been, or possibly some regret or longing related to her earlier career decisions. Preston's action in midlife to pursue his original dream of becoming a teacher demonstrates a proactive stance towards career satisfaction, which may lead to a more fulfilling sense of personal achievement. In contrast, Janet remained in her role as an administrative assistant, and without similar actions to change her career path, she might have lingering thoughts about an alternate career trajectory she did not pursue.