Three very helpful articles available by David Powlison.Part 1 Part 2 Part 3
Great book on Resolving Personal conflict: The Peacemaker, by Ken Sande.
Good book on Lust for men and women: Sex is not the problem, Lust is by Josh Harris
Helpful online book on pornography for men: Sexual detox: a guide for guys who are sick of porn by Tim Challies
Divorce, by John Murray
Good book for those who grew up with divorce understanding ways in which it might have affected them, and taking them to the gospel. Child of divorce, Child of God by Kristine Steakly. She also has a blog.
Marriage (obviously closely related to lust and to divorce, as the former is a distortion of what was intended for marriage and the latter is trying to escape God's good plans for marriage). In recent years there have been several excellent books written on marriage.
Chrisopher Ash, Married for God
Gary and Betsy Ricucci, Love that Lasts
Dave Harvey, When Sinners Say, "I do"