One of the pleasures of my job is getting to work with different people all the time, people from a range of backgrounds and with varying priorities. Some are highly paid, some are not. Some are successful, some are not. Some are happy some are not.
What strikes me often is how their happiness is independent of their circumstances. I once met someone who was incredibly wealthy but utterly miserable. I often meet people who suffer significant financial challenges but nonetheless have a sunny disposition.
I am more and more convinced that we get to choose. We get to decide which side of the bed we get out of. Shame we don't often remember that.