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The Happiness Project Promo Codes & Coupons September 2026 — Up to 50% Off

All Valid The Happiness Project Coupons & Discount Codes - Up To 50% OFF in September 2026

Last updated: Sep 18, 2026

40% Off Select Items at the Happiness Project

Exp: Nov 18, 2026

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NOVEMBEROFFER40

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30% Off the Memento Journal and Select Items at the Happiness Project

Exp: Nov 18, 2026

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VALENTINE

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30% Off Five Senses Journal at the Happiness Project

Exp: Nov 18, 2026

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DETERMINED

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25% Off Susan Cain Journals at the Happiness Project

Exp: Nov 18, 2026

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SC25MOTHERSDAY

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20% Off Storewide at the Happiness Project

Exp: Nov 18, 2026

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GIFTY

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20% Off Gift Sets and Bundles at the Happiness Project

Exp: Nov 18, 2026

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bundleup

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At the Happiness Project Save 10% Off Storewide

Exp: Nov 18, 2026

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HAPPYFIRST10

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Get 10% Off Storewide at the Happiness Project

Exp: Nov 18, 2026

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HAPPIERTOOLS

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Receive 10% Off Storewide at the Happiness Project

Exp: Nov 18, 2026

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HAPPYREMINDER

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Free Memento Keepsake Journal Storewide (Minimum Order: $30) at the Happiness Project Storewide at the Happiness Project

Exp: Nov 18, 2026

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GRADSDAY26

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50% Off the Know Yourself Better Journal the Dont Break the Chain Habit at the Happiness Project

Exp: Nov 09, 2026

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VINTAGE

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25% Off Specific Categories At The Happiness Project

Exp: Oct 20, 2026

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HAPPY25

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Expired The Happiness Project Coupons

It might still work.

20% Off Select Items At The Happiness Project

Expired

Exp: Jul 23, 2026

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UNSTUCK

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20% Off Tools For Building And Maintaining Habits At The Happiness Project

Expired

Exp: Jul 15, 2026

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GIFTSHOP

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$10 Off Gift Cards (Minimum Order $50) At The Happiness Project

Expired

Exp: Jul 15, 2026

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GIFT10

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30% Off On Habit Building Tools At The Happiness Project

Expired

Exp: Jul 06, 2026

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YOUCAN

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25% Off Select Items At The Happiness Project

Expired

Exp: Jun 26, 2026

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MEMENTO

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Get $15 Off $60 And Above Store-Wide At The-Happiness-Project.com W/Coupon Code.

Expired

Exp: Mar 28, 2026

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HONEY15

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Get An Extra 20% Off All Orders With The Happiness Project Coupon Code At The Happiness Project W/Coupon Code

Expired

Exp: Mar 28, 2026

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SUMMERSTORIES

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Save 20% Off Any Purchase W/Coupon Code

Expired

Exp: Mar 28, 2026

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SUNSHINE20

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Get 20% Off All At The Happiness Project At The-Happiness-Project.com W/Coupon Code

Expired

Exp: Mar 28, 2026

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GIFTY

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Get An Additional 10% Off Select Products At The-Happiness-Project.com

Expired

Exp: Mar 28, 2026

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HAPPYFIRST10

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At The Happiness Project Extra 10% Off Sitewide

Expired

Exp: Mar 28, 2026

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HAPPIERTOOLS

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Using The Happiness Project Discount Code Save Up To 10% Off Sitewide At The-Happiness-Project.com

Expired

Exp: Mar 28, 2026

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HAPPYREMINDER

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25% Off Know Yourself Better Journal At The Happiness Project

Expired

Exp: Mar 28, 2026

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KYB25

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Save 20% Off The Quiet Life A Journal By Susan Cain At The-Happiness-Project.com

Expired

Exp: Mar 28, 2026

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Susan20

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The Happiness Project Discount Code: Extra 25% Off Select Items (Min Order: 2) At The-Happiness-Project.com.

Expired

Exp: Mar 28, 2026

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MEMENTO

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Extra 50% Off Select Items At The Happiness Project

Expired

Exp: Mar 28, 2026

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FRESH50

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With The Happiness Project Coupon Take Up To 25% Off Select Categories At The-Happiness-Project.com

Expired

Exp: Mar 28, 2026

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HAPPY25

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At The Happiness Project Extra 25% Off Journals At The-Happiness-Project.com

Expired

Exp: Mar 28, 2026

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DADSDAY25

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Save 30% Off Select Items

Expired

Exp: Mar 28, 2026

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TEACHER

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Get $10 Off Orders $50+ Gift Cards At The-Happiness-Project.com.

Expired

Exp: Mar 28, 2026

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GIFT10

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