Csikszentmihalyi is saying that Happiness is a self-made choice. The quote from the dying people supported and added context to the same idea.

The Steve Jobs quote is probably the most unrelated, you're right. I included it because I felt that it gave a good practical example of what it means to introspect, judge, and measure your own fulfillment. The overarching idea I'm trying to get across is to drop the social pressure to "keep your head down, don't make a lot of noise, and you'll get your paycheck every two weeks".