Here are recommendations from a thread that I posted back in 2003 that are still good today:

Depression:

The Depression Source Book by Brian P. Quinn, C.S.W., Ph.D.
Understanding Depression by Raymond DePaul, Jr., M.D.
The Secret Strength of Depression by Frederic Flac
I Don't Want To Talk About It: Overcoming the Secret Legacy of Male Depression
by Terrence Real
Unmasking Male Depression by Archibald Hart
The Pain Behind The Mask: Overcoming Masculine Depression by John Lynch,
Christopher T. Kilmarting
The Noonday Demon, An Atlas of Depression by Andrew Solomon
Unholy Ghosts, Writers on Depression by Nell Casey
Depression, Questions You Have...Answers You Need by Sandra Salmans

Personality Disorders:

I Hate You–Don't Leave Me: Understanding Borderline Personality by Jerold J.
Kriesman, Hal Straus
Stop Walking On Eggshells by Paul T. Mason
Narcissism–Denial Of The True Self by Alexander Lowen, M.D.
Narcissism and Character Transformation, The Psychology of Narcissistic
Character Disorders by Nathan Schwartz-Salant
Malignant Self Love, Narcissism Revisited by San Vaknin, Ph.D.
Why Is It Always About You, Saving Yourself From the Narcissistic In Your Life
by Sandy Hotchkiss, LCSW
Living with the Passive Aggressive Man, Coping With Hidden Aggression–From The
Bedroom to The Boardroom by Scott Wetzler, Ph.D.
Nasty People: How To Stop Being Hurt By Them Without Becoming One of Them by
Jay, Psy.D Carter
Controlling People, How To Recognize, Understand, and Deal With People Who Try
to Control You by Patricia Evans
Stop Being Manipulated by George H. Green, Ph.D., Carolyn Cotter, MBA
In Sheep's Clothing, Understanding And Dealing With Manipulative People by
George K. Simon, Jr., Ph.D.

Mid-Life Subjects:

Men in Mid-Life Crisis by James Conway
Your Husband's Mid-Life Crisis by Sally Conway
Surviving Male Menopause, A Guide For Women and Men by Jed Diamond
Male Menopause by Jed Diamond
Understanding Men's Passages by Gail Sheehy

Abusive Subjects:

Allies in Healing, When The Person You Love Was Sexually Abused As A Child by
Laura Davis
Abused Boys, The Neglected Victims of Sexual Abuse by Mic Hunter
Victims No Longer, Men Recovering From Incest And Other Sexual Child Abuse by
Mike Lew

Miscellaneous Subjects:

When A Mate Wants Out, Secrets for Saving a Marriage by Jim and Sally Conway
Moving On After He Moves Out by Jim and Sally Conway
Love Must Be Tough, New Hope for Families In Crisis by Dr. James C. Dobson
The Myth Of The Greener Grass, Affair-Proof Your Marriage, Restore Your Love,
Recover Your Dreams by J. Allan Petersen
Mars and Venus, The Languages of Love by John Gray, Ph.D.
After the Affair: Healing The Pain and Rebuilding Trust When A Partner Has Been
Unfaithful by Janis Abrahms, Phd Spring, Michael Spring
What About The Big Stuff, Finding Strength and Moving Forward When The Stakes
Are High by Richard Carlson, Ph.D.
Divorce Busting by Michele Weiner-Davis
Who Moved My Cheese by Spencer Johnson, M.D.
Relationship Rescue by Phillip C. McGraw, Ph.D.
Solo Partner by Phil Deluca

Additional suggestions from posters:

His Needs, Her Needs How to affair proof a marriage - by Dr. Harley (works for marriages that aren't in an adultery situation too.)
How To Hug a Porcupine: Dealing with Toxic and Difficult to Love Personalities - Dr. John Lund
The Case for Marriage- Linda Waite and Maggie Gallasker
Avoiding Emotional Divorce - Dr. John Lund
Hope for the Separated: Wounded marriages can be healed - Gary Chapman
Marital Relationships Seminar - Douglas E. Brinley
Why Men Don't Listen and Women Can't Read Maps - Barbara Pease
Why Marriages Succeed of Fail: And How you can Make Your's Last - John M. Gottman
When Men Batter Women: New Insites into Ending Abusive Relationships - John M. Gottman
The Marriage Clinic: A Scientifically Based Marital Therapy - John M. Gottman
Torn Asunder: Recovering from Extramarital Affairs, by Dave Carder
Getting Back Together: How to Create a New Loving Relationship With Your Old
Partner and Make It Last, by Masa Goetz
"Sacred Contracts. Awakening your Divine Potential" by Caroline Myss
"Anatomy of the Spirit" by Caroline Myss


Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.