The Power of Habit by Charles Duhigg

This book provides various case studies on how habits have impacted peoples lives for better and for worse and really shows you how important it not only is to define habits for the better but to also identify habits which are actually harming you. 

I was expecting some lifehacks on how to form habits and good ones, but even though I was dissapointed the book doesn't provide you the tools or framework on forming good habits. It does provide you some sense of how important habits are in everyones lives.