Nothing is more frustrating than seeing your own limitations and knowing that you can't get past them – and that's exactly what happens to some of the characters in Howards End. Dissatisfaction is a product of many social factors here – class, gender, profession, among other things – and as a result, all of the characters are dissatisfied in some way. The modern world that Forster depicts, with its changing social norms and political conflicts, makes for a whole lot of unresolved personal troubles…some of which can never really be resolved, no matter how hard our characters try.
Dissatisfaction, in the world depicted in Howards End, is an inevitable condition of modern life.
In the capital-dominated, highly economized social world of Forster's novel, money is the only condition upon which happiness is based.