If acceleration is the problem, then resonance may be the solution. This is the central thesis of this acclaimed book by Hartmut Rosa, which can be read as a foundational document for a sociology of the good life. Instead of measuring quality of life in terms of resources, options, and moments of happiness, we need to focus on the relationship with the world that shapes this life. The fact that this relationship is increasingly disturbed is closely linked to the logic of enhancement in modernity, both on an individual and collective level. Rosa addresses the major crises of the present and paves the way for a resonance-theoretical renewal of Critical Theory.