Mihaly Csikszentmihalyi: Flow, the secret to happiness

TED2004
Mihaly Csikszentmihalyi: Flow, the secret to happiness (script)
Summary
In the world, there are people who are happy, even if they don't have money. So when they're doing something, they probably feel their life meaningful and worth doing, even if they don't expect either fame or fortune at the moment. The speaker says that this is a ecstatic state.
A moment of ecstasy is there that it happens in the completely concentrating process automatically and spontaneously. It can only happen  to someone who is very well trained and who has developed techniques. It doesn't make that person feel himself/herself existence like his hand that seems to be moving itself or something that you want to do just flows out naturally. It happens in different realms.
The speaker calls this type of experience "the flow experience" and says that for everyone has flow channel. The moment is that 1) you know that exactly what you want to do, 2) you get immediate feedback. 3) You know that what you need to do is possible, even though 4) it might be difficult. 5) Your sense of time disappears, 6) you forget yourself and 7) you feel part of something larger.
You begin to feel that your life meaningful and worth doing. It'll make you happy.