High Definition Learning Group

Wellness & Happiness Books

Research-backed titles on physical wellbeing, mental clarity, and the science of lasting happiness.

HDL Group splits this subject into two related but distinct titles: The Science of Feeling Great approaches wellbeing through neuroscience, longevity research, and physical vitality (its 5-Pillar Vitality Blueprint), while The Art of Joy focuses specifically on the psychology and practice of happiness, built around its own 5-Pillar Joy Architecture and a 30-Day Protocol. Readers interested in the broader research landscape can also read what current research says about happiness and wellbeing.

The two books are complementary rather than overlapping — one is body-and-longevity-first, the other is mind-and-emotion-first — and several readers read both together. See the glossary for definitions of terms used across both.

The Science of Feeling Great cover Wellness & Health

The Science of Feeling Great

$18 USD · Google Play Books
The Art of Joy: You Deserve to Be Happy cover Happiness & Psychology

The Art of Joy: You Deserve to Be Happy

$18 USD · Google Play Books

Also from HDL Group: read the free Science of Happiness & Wellbeing 2026 →

Which wellness title fits you?

TitleFocusBest forPrice
The Science of Feeling GreatPhysical vitality & daily habitsReaders who want a body-first, habit-based approach$18 USD
The Art of JoyNeuroscience of happiness (5-pillar framework)Readers who want a psychology/emotion-first approach$18 USD