Happiness Project

Harper Paperbacks

The Happiness Project: Gretchen Rubin            

CROWN

The Happiness Project One-Sentence Journal: A Five-Year Record

Independently published

The Happiness Project: Self Care Workbook        

CROWN

The Happiness Project One-Sentence Journal for Mothers: A Five-Year Record

Embla Books

The Happiness Project: A totally hilarious and heart-warming romantic comedy (English Edition)

Stars and Ink Press

The Happiness Project: A New Adult LGBTQIA Romance (English Edition)

Evangeline Auld

Happiness Project: Happiness is a Choice (English Edition)

Happiness Project: Your Life Guide For Beginners (English Edition)

Arts & Crafts

Happiness Project                                

Lev.

Het Happiness project (Dutch Edition)