Marriage is a vocation; and a gift. Yet, it takes work, sacrifice, compromise, dedication, and a sense of humor. Ask any couple that has been happily married and they will admit they could not make it on their own without the support and assistance of others; family, close friends, religious leader, counselors, other resources.
There are many "self-help" resources available for married couples, and much of this could prove to be helpful, yet for Catholic couples, a resource that takes into consideration the Catholic faith while remaining grounded in everyday reality is a rare find.
The U.S. bishops have undertaken an initiative to assist couples in their marriage, as well as couples considering marriage, engaged or not, as well as young adults discerning if marriage is a foreseeable vocation. This project called "For Your Marriage" is available online, and offers a wealth of resources from top relationship experts and Church leaders in marriage preparation and ministry.
To learn more, see: http://www.foryourmarriage.org/catholic-marriage/
En Espanol: http://www.portumatrimonio.org/todapareja/c/importante/