What is the one constant that people need to learn to adjust to, according to the text?

The constant that people need to learn to adjust to is change. Change is an inherent and unavoidable part of life; it can occur in personal circumstances, professional environments, and societal contexts. Embracing change is essential for personal growth, adaptability, and resilience. In a world that is constantly evolving—whether through technological advancements, shifts in social dynamics, or fluctuations in the economy—developing the ability to navigate change can enhance one's problem-solving skills and emotional intelligence.

While friendship, happiness, and success are significant aspects of life, they are more contingent on external factors and may not be as universally applicable or essential in terms of adaptation. Recognizing and accepting change as a constant encourages individuals to cultivate a mindset that is open to learning and thriving despite uncertainties, which is crucial for long-term success and fulfillment.