Many observers view the success of a long-term relationship as a matter of "luck," yet this perspective is fundamentally flawed. The reality is that lasting partnerships are not the product of serendipity, but rather the result of a deliberate, often painful, psychological shift. As the text notes, "success in love isn't about luck." It is instead a choice to remain committed despite the frequent, intense volatility that defines the human experience within a partnership.
Successful couples are not immune to the crises that plague others. They experience moments where they have "despaired, slammed the door, packed a suitcase and walked to the station." What distinguishes them is not the absence of conflict, but the fact that they "won't have boarded the train." Their decision to stay is rooted in a profound realization: the grass is not greener elsewhere. By resisting the temptation to leave, they acknowledge that the friction they experience is a universal constant of human intimacy. They understand that the difficulties they face are "those that would necessarily unfold with pretty much anyone they could be with in one form or another."
The cornerstone of a lasting union is the abandonment of "that most destructive of illusions – flawless love." Society often conditions individuals to seek a perfect match, but those who succeed in love reject this idealism. They accept the uncomfortable truth that "we are all intrinsically flawed, out of control, disturbed creatures mired in madness, error and confusion." This radical acceptance shifts the dynamic from one of judgment to one of empathy. Rather than viewing a partner’s mistakes as evidence of their unsuitability, successful partners view them as predictable manifestations of our shared human condition, rendering them "generally worthy more of compassion than fury."
When a relationship reaches a breaking point—perhaps following a "three-day long argument followed by a week-long sulk"—the resilient couple chooses to redefine their narrative. They move away from the role of the "upbraiding angry angel," a figure who demands perfection and punishes failure, and instead gravitate toward becoming each other’s "best friend." This transition is made possible by the realization that neither partner is "ultimately especially dreadful – only averagely and typically so."
Finally, the text highlights the importance of realism in the face of societal pressure. Modern culture often projects the image that love should be effortless, a "malicious suggestion" that sets couples up for inevitable disappointment. Successful couples survive because they "block their ears" to these unrealistic expectations. They acknowledge that they are "trying to do something extremely complicated together" and accept the labor required to sustain a connection. By lowering their expectations of what a partner should be, they significantly increase their capacity to love the person who is actually there.