Deirdre: Many philosophers have argued that the goal of every individual is to achieve happiness—that is, the satisfaction derived from fully living up to one's potential.
Evidence
Many philosophers have argued that the goal of every individual is to achieve happiness—that is, the satisfaction derived from fully living up to one's potential.
They have also claimed that happiness is elusive and can be achieved only after years of sustained effort.
Simply walking along the seashore on a sunny afternoon causes many people to experience feelings of happiness.
Conclusion
They have clearly exaggerated the difficulty of being happy.
Evaluate
Deirdre confuses two very different forms of happiness. While the philosophers discuss the happiness derived from fully living up to one's potential, Deirdre discusses a momentary form of happiness.