Here are a list of the books that have helped me over the last 3 - 4 years. Not only have they helped shaped my philosophy but they are also what the articles on this site are based off of. Some of them are books I've only read recently but are already changing the way I see and do things.

Habit building books

The Slight Edge by Jeff Olson
The Compound Effect by Darren Hardy
The One Thing By Gary Keller
One Small Step Can Change Your Life: The Kaizen Way by Robert Maurer PH.D.
Superhuman by Habit by Tyna
Mini Habits by Stephen Guise
The Habit Guide by Leo Babuata
The Power of Habit by Charles Duhigg
Habit Stacking by S.J. Scott
Writing Habit Mastery by S.J. Scott
The 7 Habits of Highly Effective People by Stephen R. Covey

Emotional Wellness

The Linden Method by Charles Linden (This is a program but comes with a book)
Stress Free in 30 Days by Charles Linden
Get Out of The Cage by Adam Oakley
Undisturbed by Adam Oakley
Wake Up Successful by S.J. Scott
Flow by Mihaly Csikszentmihalyi
How to Win Friends and Influence People By Dale Carnegie
Start With Why by Simon Sinek
Mindset by Dr Carol Dweck
Emotional Intelligence by Daniel Goleman
The Practicing Mind by Thomas M. Sterne
Mastery by George Leonard
The Subtle Art of Not Giving a Fu*k by Mark Manson
The Code of The Extraordinary Mind by Vishen Lakhiani
The Obstacle is The Way by Ryan Holiday
The Ego is The Enemy by Ryan Holiday

Philosophical Books

Meditations by Marcus Aurelius
Letters from a Stoic by Senec
A Manual for Living by Epictetus
The Tao Te Ching (Stephen Mitchell)
The Daily Stoic by Ryan Holiday
Buddhism: Plain and Simple by Steve Hagen
Zen Mind, Beginners Mind by Shunryu Suzuki
Mans Search For Meaning by Victor Frankl
Happy: Why More or Less Everything is Absolutely Fine by Derren Brown

Creativity books

The War of Art by Steven Pressfield
Turning Pro by Steven Pressfield
Steal Like an Artist by Austin Kleon
Show Your Work by Austin Kleon
Ignore Everybody: And 39 Other Keys to Creativity by Hugh MacLeod

Productivity books

The One Thing by Gary Keller and Jay Papasan
Getting Things Done by David Allen
Managing Oneself by Peter Drucker
The Linden Method by Charles Linden (This is a program for overcoming anxiety. It makes you very, very productive as a byproduct).

Free eBooks

Transform Your Habits by James Clear
Master Creativity by James Clear

Books that I just find interesting

The Greatest Show on Earth: The Evidence For Evolution by Richard Dawkins
The God Delusion by Richard Dawkins
The Magic of Reality by Richard Dawkins
Neuroscience For Dummies by Frank Amthor
A Walk in The Woods by Bill Bryson
A Short History of Nearly Everything by Bill Bryson
The Wonders of The Universe by Professor Brian Cox
The Wonders of The Solar System by Professor Brian Cox
Cosmos by Carl Sagan
The Brain: The Story of You by David Eagleman
Incognito by David Eagleman
Sapiens: A Brief History of Humankind by Yuval Noah Harari
Homo Deus: A Brief History of Tomorrow by Yuval Noah Harari
Elon Musk: How The Billionaire CEO of SpaceX and Tesla is Shaping Our Future by Ashlee Vance

This list will be updated frequently as I read and recommend more books.