I wouldn't say there are any new insights per se; I'm maybe just more intimately acquainted with them. Ie when I first read it, most of the descriptions about things like how a paycheck influences your thinking/behavior were just intellectual ideas for me, but having had a mortgage + paycheck for 4 years I've come to personally witness how it's 'domesticated' me in a way, made me more fragile, however you want to describe it