What makes a marriage successful? If you ask husbands, wives, or relationship specialists, you'll probably get a wide range of responses. The truth is that there may not be one thing you can do to improve your marriage; rather, there are many things that go into forging a devoted partnership. Start by adhering to these 10 tips for a happy marriage. By adhering to these principles for a happy marriage, we can discover our most fulfilling marriages or long-term romantic relationships.