Tools of Titans by Tim Ferriss
This book is a compilation of tools and advice Tim Ferriss gained from over 200 interviews on his podcast with athletes, billionaires, Special Ops commanders, and more.
The Universe Has Your Back by Gabrielle Bernstein
Gabrielle Bernstein's book is a guide to release mental blocks like doubt, fear of uncertainty, and control in order to live more fully.
The Plant Power Way by Rich Roll & Julie Piatt
These two are like my spirit guides. Their cookbook has a ton of amazing recipes, including ones that aren't recipes at all (my favorite kind) and are instead just ideas about different ways to prepare food. What I love about this book is that it isn't just a cookbook---there are sections about yoga and other concepts of physical and mental wellbeing.
Meditations by Marcus Aurelius
The Roman emperor Marcus Aurelius is one of my favorite figures to look to with regards to self-improvement. This book contains a series of mental reflections on various topics such as rationality and emotions written by Aurelius with no intent to publish. One of my very favorite quotes is something he once said:
Intuitive Being by Jill Willard
Amanda Chantal Bacon of Moon Juice described this book by saying: "Imagine a world in which everyone had faith in their intuition and fully listened! What a brave, love consciousness field we would be. There are simple steps to tune into the knowing that is alive, inside and your birthright...for the love of humanity please get as many people to read Jill Willard's book as you can. #SUPPORTYOSELF."
Designing Your Life by William Burnett & Dave Evans
This book is a course in designing your life based on what you want (as well as helping your figure out what that is). Burnett and Evans, of the Stanford design school, use actual techniques to help you do this. As a visual INTJ ("the Architect"), the methods they use are perfect for the way my brain works. If you're like me and need more than just platitudes to really make any difference, this may be for you!
The Little Book of Hygge by Meik Wiking
I've said before that I've been doing hygge since birth, so it's no surprise that there's a hygge book on this list. This book captures the crux of hygge, explaining what it is, why it's magical, and how to achieve it.
The Nordic Theory of Everything by Anu Partanen
I'm not sure if there will ever be a day that I stop recommending this book. It's unlike the others listed here because it's on more of a macro level. It explains the policies and lifestyles in various Scandinavian countries that allow their societies to operate smoothly. I'm definitely the kind to romanticize Scandinavian countries and I'm not afraid to admit it. Even if "the grass is always greener on the other side", I really think we Americans could stand to learn a few things from these societies.