I am someone who worries a lot. I'm always worrying 'what if?' Now I'm a mum - there will be worries for the rest of my life, but they're not about me anymore.
The satisfaction derived from the fleeting things of life is not lasting; and our wants remain unfulfilled. There is thus a general sense of dissatisfaction accompanied by all kinds of worries.
One of my worries about America is the epidemic of depression we've been in. One of the possibilities about that is that the 'I' gets bigger and bigger, and the 'we' gets smaller and smaller.