I really like the books by Pema Chodron, a buddhist nun, but works great for non-buddhists, too (as myself). Or then the books by James Hollis, a Jungian with a more analytical take. I suggest to google for titles and the summaries in Amazon. There is also Care for the Soul by Thomas Moore, and Anam Cara by John O'Donohue, and finally Conscious Living by David K. Reynolds. These are all quite different from each other, I hope some of these hit the spot:-)
I personally found Steve Pavlina's book, Personal development for intelligent people, to bevery insightful and practical. Not too suitable if you're looking for a more spiritual book but well, you can read some of his articles as a preview at his blog (http://www.stevepavlina.com/).
I am a HUGE fan 'The Art of Happiness' by the Dalai lama. It offers WONDERFUL perspectives on dealing with everyday emotions. It offers great advice dealing with everything from feelings of jealousy to self image to kindness. I love it. It is one of those books that is great to read once or twice a year. I would HIGHLY suggest it. Even if your not buddhist or hold any of those belies... it talks about the basics of human compassion and I think EVERYONE could benefit from it!
-Feelings Buried Alive Never Die by Karol K Truman
-The Power of Your Subconscious Mind by Joseph Murphy
-Celestial Prophecy by James Redfield
-Living magically by Gill Edwards
-The alchemist by Paulo Coelo
-Anastasia by Vladimir Megre, highly recommended
-Journey of Souls by Michael Newton PhD
-The nature of personal reality: a seth book by Jane Roberts
- A Course in Miracles is an amazing book
-Theta Healing by Vianna Stibal - http://www.thetahealing.com/
I found Don Miguel Ruiz's 'The Four Agreements' very good. Really helped me through some shaky times.
Its very simple but effective. I lent it to a friend ages ago and really want it back as could do with reading it again.