1006472
Kimberly Shirley Sae-Ung reviewedHookedA book on how to build habit-forming products
 Recommended
Pros: 

Interesting and insightful

Cons: 

Short

I actually went to a talk that featured Nir, great personality and was very interactive with the audience.

Kimberly Shirley Sae-Ung has used this product for one year.