How do you define or promote something as elusive as happiness? Most of us might tick the box marked “cheerful” on Wednesday morning but could well consider ourselves crashingly miserable come Sunday afternoon. And suppose we can empirically establish contentment over a longish period, how do we unpick the underlying reasons for it? A happy relationship or a triple-lock pension? A course of mindfulness or a handful of supportive friends?

Lynne Segal gives us her take on the matter straight off. The world is a place of “unbearable pain and sadness”, the experience of melancholy is an important part of an authentic emotional life. As for the official emphasis on happiness, it is insultingly limited, dishonest and functional. “We need to resist the happiness imperative beamed down at us from every other billboard. . .” In Segal’s view, “radical happiness” involves us in an enterprise very different in scope and far more meaningful: the seeking of political change, and with it the experience of solidarity and collective joy.

Scathing of the ways that the happiness industry has played into official narratives, Segal is particularly critical of influential figures such as Richard Layard, Tony Blair’s so-called happiness tsar, who chose to “ignore the effects of structural inequality on the emotional distress it measures” preferring instead to consider emotions in the context of Gross Domestic Product, then compounding his intellectual and political sins by promoting the widespread use of the quick-fix remedy Cognitive Behavioural Therapy. Instead of Layard, she says, we should all have been listening to British epidemiologist Michael Marmot who “convincingly researched the quite devastating effects of poverty and inequality on social misery generally, and individually psychic health in particular.”

It is a feature of all Segal’s work that when she decides to tackle a subject – be it the history of women’s experience of heterosexuality, the rise of essentialist feminisms or, most recently, the politics of ageing – she examines it from every conceivable angle. She always makes me think of someone picking up a stone on the beach and turning it, with infinite exhaustive care, this way and that. Here, then, she gives us trenchant chapters, complete with plenty of historical and theoretical readings. She takes on the decline of carnivals, festivals and other expressions of communal joy (the spontaneous gathering of those “without institutional power” is always threatening to the powerful) as well as our changing understanding of depression, noting the sinister link between a rise in diagnoses for serious depression and bipolar disorder, and the discovery and marketing of drugs for treating them.…