Many of the authors in this list have a component of spirituality to their writings. But most also cover changing your point of view, what you're thinking. If you don't think differently you can't change anything.
This woman has the most effective method of changing your thoughts...or as she phrases it, the thoughts let go of you...that I have ever tried.
Her method, known as The Work, is so much of what others teach, but simplified to its essence. Making it not only simple, but potent and powerful.
Her books include "Loving What Is" and "A Thousand Names for Joy." But a lot of what she teaches is available for free at the site thework.org.
Wayne Dyer has written many best selling books such as "The Power of Intention" and "Inspiration." He has also been on many Public Television specials. Wayne Dyer has a focus on many different philosophies from the Christian St. Francis of Assisi to Chinese philosopher Lao Tzu. One common theme in his writings is how our thoughts affect us and create us and our lives.
Debbie Ford has written best sellers such as "Dark Side of the Light Chasers" and also a complimentary book called The Secret of the Shadow. We go through life trying to deny certain aspects of ourselves, and as a result they fester or explode like suppressed volcanic gasses. Bringing these shadow sides to light can bring us more peace and find strengths we didn't know we had.
Don Miguel Ruiz
This author is most well known for the book he has written called The Four Agreements. This book takes you on a metaphorical perspective of life based on the ancient Toltec wisdom. He explains how we make agreements with people and these form our beliefs, some of which hurt us. For example, when we are hurt by an insult he explains that, "You take it personally because you agree with whatever was said." If you choose to not agree with it you do not have to be hurt by it.
You may never write a book or even a single article, but you are the author of your own life. You are the one who can choose which thoughts to believe and which actions to take. Regardless of how many self help books you may or may not read, ultimately it is only you who can make the changes necessary to complete your own happiness and give your life a sense of fulfillment.
Don't fall into the trap of making any author your guru. They are only human and have failings just like the rest of and not everything they say will be what's best for You. While reading anything an author says listen carefully to yourself if that particular thing they said is right for you...if not just move on to the next thing they say.
Nice list. I read the four agreements and actually access it all the time. Another self help guru that I love is www.boblivingstone.com and his latest is Unchain The Pain that teaches you to be more introspective starting with basic but important questions. A must read if you're thinking about therapy or are already in it.
I'd personally add Gail Feldman- I know her book "Midlife Crash Course" has helped out my aunt a lot when she went through some hard times. She says it's kind of the Law of Attraction meets psychology.
Good list. Another author I would humbly include is Jim Rohn. Also, many of the ideas these authors put forth are included in a free tool named Growth Notes. It's worth sharing and doesn't cost a thing. If you want to practice what these folks teach, Growth Notes is located here: http://growthnotes.com