What is Happiness and Can it Last?

What is happiness and what in your opinion, is it that can keep a person completely happy, peaceful and free of headaches all of the time? Do you think that people who appear happy all of the time can possibly be happy all of the time, or do you feel that they may really be feigning happiness. I believe that happiness can be genuine and yet people can at times feign happiness. Give me your take and state if you think it's possible to experience happiness all of the time and what you think brings true and lasting and complete happiness -- whether it's a person's spiritual devotion, family, friends, money and things that you feel bring true long and lasting happiness.