In the beginning of a relationship, attraction comes easily. Interest comes easily. So do hope and optimism. Unfortunately, the skills needed for long-term success do not come easily. Authors talk to you, but you can't talk back.
Counseling can help, but it can be expensive.
You could talk with other couples about your relationships. But most couples are unwilling to talk openly about their relationship. Enduring limited, unhappy relationships in isolation seems preferable to openness. The reality for most people is that there is no support community for couples. We Provide Skills, Information and Community Marriage Support - Couples Place, developed by Dr. David Sanford a couples therapist and columnist, provides practical information, training and support in learning the skills and attitudes that make for relationship success.