Happiness is a very precious value that every one look toward in his life according to his ideas and believings because it is a relative thing and unmeasurable so some people think that happiness is in teenage and teenagers are the only people feeling joyable and intrested, some other people think that the money is the secret so when they become adults and have their own salary they become happier.
On the first hand, the view of joy ecuals teenage comes from the relation between the responsability and strain, so when you have less things to do you will be more relaxable, either the benifets of that age makes the feelings in high level so you feel deeply gladness and deeply deprissed.
On the oppossite side there is the opinion which says that the adulthood gives more happiness, well it depends on many things like the consciousness level that persons had,and the flexability of life style, alot of adults have a high level depression and alot of psycolagical problems as a result for this awareness, it is a complicated thing to judge about specialy in adult life with the family issues and the huge taxes and the incredible increasing for prices it is hard to find peace through all that.
In conclusion, the feelings is inner issue and every person has his special thoughts and believes so pinning the happines in one reason is unlogical idea and does not make any sence, every one has an own theory about happiness and works on his life based on it.