Csikszentmihalyi is saying that happiness is an inner, private cultivation that is not dependent on outside events.
However, Steve Jobs, one of the richest and most powerful men on the planet (while he was alive), says he has been having his own way every day for 30 years. Jobs literally had the means to do just what he wanted to do each day for many years.
The first idea is about being happy regardless of your circumstances. The second idea is about being happy because you figured out how to get what you want out of other people and insisted on it.
And actually I don't see the other quote as being nearly as closely related as he thinks either. That one sounded like dying people were just admitting that they were depressed and wished they had tried harder to make more friends in their senior years.
What I've heard is that genetic bio- and neuro- chemistry play a significant role in happiness, so you have to realistically incorporate that. However, obviously the core conception of the self's orientation towards the world must be partially learned and so training can affect contentment also.
Studies have also shown that the higher one is on the social ladder, the less stress one experiences. So climbing the social ladder will lead to less stress and therefore greater happiness. And most people would agree that having friends is key to happiness also.