I don’t think happiness is tied to a specific age. It really depends on whether a person’s needs and values are being met at that stage of life. For example, if someone values close friendships and had a great group of friends in childhood, but feels lonely as an adult, they might look back and say they were happiest as a child. On the other hand, someone who struggled to make friends growing up but has a strong social circle now might feel much happier in adulthood. So I think happiness depends more on circumstances than on age itself.