This three-letter word could be ruining your chances for true happiness

Being able to say no is important. Amy Morin, author of “13 Things Mentally Strong People Don’t Do,” talks about the importance of saying no, and gives some tips on learning to say no.

Produced by Ruchika Agarwal and Joe Avella

Follow BI Video: On Twitter

Business Insider Emails & Alerts

Site highlights each day to your inbox.

Follow Business Insider Australia on Facebook, Twitter, LinkedIn, and Instagram.