This was an interesting book. Written by a psychologist, it looks at how people form and reshape habits, without the rose-colored glasses of a self-help book. By not sugar coating the truth about how the human mind actually works while carrying out habitual activities, and how difficult it is to create new habits and get disentangled from old ones, it gives you information you can actually use instead of platitudes and feel-good advice that won't work.
In addition, it's always interesting to hear about how the mind works. This book is well worth a read for anyone who enjoys books habitually (see what I did there)