Welcome to The Happiness Code
Here you will find all the tools, questionnaires and the interactive Happiness Leak diagnosis tool to immediately apply the insights from the book to your life.

Everything to crack the code for happiness
From book to practice. Use these tools to apply the four contexts of happiness (curiosity, flow, skill, and connection) to your own life.
Discover where your happiness leaks and where it flows. 40 questions, personal results.
Download questionnaires specifically for couples, teams, executives, entrepreneurs and more.
The universal rules of the game that work in any context. Download as a poster for your wall or desk.
From insight to action. The proven step-by-step plan to crack the happiness code with your team or family.

The Happiness Leak Test
Discover where your happiness leaks and where it flows. Choose your context, answer 40 questions, and receive a personalized analysis with rules that work for you.
Partners who want to deepen their relationship
Colleagues who want to increase job satisfaction
Leaders who make happiness possible
Everyone under one roof
Questionnaires by target group
The book's appendices contain questionnaires for various contexts. Download the version that best suits your situation here.
Discover together where your happiness leaks and flows in your relationship.
Identify where job satisfaction is leaking and create rules together.
How do you, as a leader, make happiness possible for your team?
Discover how you, as an entrepreneur, can design happiness into your business.
Make home a place where happiness can arise naturally.
Design policies that increase citizen well-being.

The Happiness Code Step-by-Step Plan
Happiness doesn't change by reading about it, but by doing things differently. Follow these five steps to crack the happiness code.1
Take the self-assessment and discover where your happiness is leaking away. Which of the four contexts (curiosity, flow, skill, or connection) offers the most room for improvement?
Discuss your results with your partner, team, or family. Use the discussion questions from the test. Listen without judging. The goal is to understand, not to solve.
Choose a maximum of five concrete game rules together. Use the universal rules as a starting point and tailor them to your situation.
Start with an easy rule. Success creates momentum. Post the rules in a visible place. Make them unavoidable.
Schedule a weekly check-in. Evaluate monthly which rules are working. After six months, take the self-assessment again and compare your results.
The 7 Universal Rules of the Game
These seven rules work in any context. Whether you're collaborating with colleagues, deepening a relationship, or running a family, they form the foundation of the happiness code.
We put our phones away during conversations
We listen without interrupting or resolving immediately
We protect concentration time
We make room for something that doesn't have to lead to anything
We ask questions we don't know the answer to
We regularly provide constructive feedback without judgement
We make it safe to share challenges

The Happiness Code
How do you become happy? Behavioral scientist Astrid Groenewegen shows in The Happiness Code that we shouldn't focus on ourselves, but on our surroundings.
Within four concrete contexts (curiosity, flow, skill, and connection), happiness can arise naturally. Not by tinkering with yourself, but by arranging your environment in such a way that happiness becomes inevitable.
Expert in applied behavioral science and founder of SUE | Behavioural Design Academy. She previously wrote "The Art of Behavioural Design," which was ranked number one in the Management Book Top 100.
Do you want more?
You read in the book that happiness has a social DNA. Want to design your own happiness context? You can! Order the book for someone else or take a training course with your team.

Happiness has a social DNA; it works best when shared. Know someone who should read this book? Order it as a gift.
In a one-day training, teams learn how to detect happiness leaks and jointly design game rules that structurally improve job satisfaction and well-being.