A multi-decade Harvard study tracking hundreds of men found the quality of relationships was the single best predictor of long-term health and life satisfaction. People most satisfied with their relationships at age 50 were the healthiest at age 80, a stronger correlation than with social class, wealth, fame, or genetics.

Despite its complexities, a successful marriage's foundation is simple: each partner consistently feels they are the other's favorite person. This core sentiment, when genuinely maintained, provides the warmth and motivation to navigate inevitable challenges.

Matthew McConaughey feared that making family his top priority would diminish his work ethic. Instead, he found that with his identity less singularly focused on his career, the pressure was off, and he actually performed better at his job. Shifting your core identity can enhance professional output.

Contrary to common advice, high expectations aren't inherently bad for marriage. They create a bifurcation: couples who invest enough to meet these expectations achieve unprecedented levels of fulfillment, while those who can't are often unhappier than couples from past eras with lower expectations.

A wife is the 'radiance' of her husband. Her public countenance and spirit are a direct reflection of how she is being led, loved, and treated in private. This makes the marriage a visible, real-time testament to a person's true character.

The key to a successful long-term relationship isn't just chemistry; it's a partner's psychological stability. This is measured by how quickly they return to their emotional baseline after a setback. This resilience is more predictive of success than more fleeting traits.

To maintain relationship stability, people in committed relationships unconsciously deploy a 'pro-relationship bias.' They automatically perceive attractive alternative partners as less appealing than they actually are. This psychological defense mechanism downgrades temptations and helps insulate the relationship from outside threats.

A successful long-term partnership can be maintained with four practices: 1) Prioritize fun over rehearsing grievances. 2) Pray or meditate together to align spiritually. 3) Always make eye contact during conversations. 4) 'Always Be Touching' (ABT) to maintain physical connection.

Contrary to success creating marital friction, Tabitha Brown's husband was relieved when she became her authentic self. He hated how Hollywood changed her and was happy the world could finally see the person he knew and loved. A partner's support for your true self is a powerful indicator of alignment.