Ecstasy is our very nature, not to be ecstatic is simply unnecessary. To be ecstatic is natural, spontaneous. It needs no effort to be ecstatic, it needs great effort to be miserable. That's why you look so tired, because misery is real hard work; to maintain it is really difficult, because you are doing something against the nature.
But there is a world of difference between dancing and watching a dance performed by a group of professionals who are paid for it. You work hard during the day, and when you are tired in the evening you go to a concert to watch others dancing. It is all you can do, but it is not even an apology for celebration.
Children can be taught meditation more easily because they are not yet spoiled. When you have been spoiled the hard work is to help you to unlearn.