Health & Mindset

How to train your brain to be more optimistic

The glass is half full — here's how to see it that way.

Smiling woman with curly hair. These are the 12 best natural hair products of 2021. Shop the products that will promote healthier hair growth, shine, and movement for your natural hair.
Smiling can trick your brain into happiness.Getty Images

Brianna Steinhilber

Brianna Steinhilber is an editor at NBC News BETTER.