**Summary:**
In Episode #172 Ari is joined by [Nir Eyal](http://www.nirandfar.com/) – author of _[Hooked](http://amzn.to/1fusU7a) _– on the Less Doing Podcast. During this Sunday’s episode, Ari and Nir speak at length about the secrets behind human habit-forming. Listen as Nir illustrates why we struggle with habit-forming and habit retention.
**Special Announcements:**
## Fuel the Fire
Come watch Ari light-up the Drake Hotel in Chicago on Wednesday, August 5th as he delivers a rou