
Behavioral Science · The Applied Self
Self-improvement as a project, not a journey. Evidence-based books for people who are skeptical of gurus but serious about change.
Claire Langton grew up between two languages and two ways of thinking: a French mother who trusted logic and an American father who trusted feelings. She studied psychology in New York and cognitive science in Paris before spending a decade in applied behavioral science, where she learned that most of what people believe about self-improvement is either wrong or incomplete.
She started writing because the gap between what the research shows and what the self-help shelves contain is embarrassing. The science is good. The translation is terrible. Most books in this space are built on anecdotes, charisma, and repackaged common sense. Langton builds hers on evidence, structure, and tools that work even when motivation disappears.
Each book in The Applied Self takes one essential human challenge and treats it as a project with a beginning, a middle, and a measurable result. The structure is consistent: Problem, Truth, Project, Blueprint, Future. No inspiration. No guru energy. Just the work.
Claire lives in Portland with a cat who ignores her, a reading habit that concerns her friends, and a conviction that the most important things in life can be learned if someone explains them properly.

The Self-Trust Workbook
Become someone you believe
What the research actually says about building genuine self-trust, stripped of motivational noise. Not confidence as performance, but confidence as something you earn from yourself. Evidence, structure, a clear plan.

The Focus Workbook
Train your attention back
A structured approach to reclaiming your ability to concentrate. Not productivity hacks or digital detoxes, but a ten-week attention training programme grounded in cognitive science.
The Applied Self is a series for people who are skeptical of self-help but serious about self-improvement. Each book takes one essential human challenge, strips away the motivational noise, and treats it as a project you can actually complete.
The structure is consistent across every title: Problem (what is actually going wrong), Truth (what the research says), Project (the specific challenge reframed), Blueprint (the tools and protocols), Future (what maintenance looks like). Every book ends with a system, not a feeling.
Further titles in The Applied Self are in development. Each follows the same five-part structure: Problem, Truth, Project, Blueprint, Future.
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The Applied Self is published by Nova Ars Vivendi, an independent publisher of practical non-fiction for people who take their lives seriously enough to design them.
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