Counseling is essential to the healing process for both the husband and the wife. It helps you work through the "whys" of sexual addiction and offers a mediator to help you communicate more effectively. Counselors have insight, outside your marriage, that might help you better understand what's happening inside your marriage. We highly recommend counseling for any couple who has been wounded by sexual sin. You can go to The American Association of Christian Counselors to find a Christian counselor near you.
Having a support group was essential to our healing process. It gave my husband accountability and encouragement from men who have overcome addiction, and it gave me a chance to speak with other wives who were hurting just like I was. It helped to not feel like a crazy person because they were experiencing the same things I was! Support groups are an excellent resource for healing. You can find support groups in at local churches or at:
Every Man's Battle Support Group Search please call
Be Broken Ministries Support Group Search
The Game Plan
by Joe Dallas
Every Man's Battle
by Fred Stoeker and Stephen Arterburn
by Heath Lambert
Clay & Susan Allen have created a great resource that provides curricula for small-groups to use in finding freedom. They also have "virtual small groups" that they conduct via 800-numbers, so that people who aren't in churches that have small groups can have one via phone. They are very effective.