Maintaining relationships has nearly nothing to do with luck and everything to do with doing those things that are required to maintain relationships. Those come naturally to some people but for others they are learned skills that require some focus and effort. But if you fail it's almost certainly not because of bad luck, but rather because you decided that it was too much bother.
Yes, this is an aspect of secure attachment. Securely attached people prioritize relationships; relationships take time and effort and require reliability.
Insecurely attached people are usually not satisfied with relationships, and consequently don't prioritize them. The (possibly unconscious) expectation of a bad relationship is self-fulfilling.
Even people who work long hours can build close relationships with co-workers. The point of the article is not about working a lot versus less. It's about where you seek fulfillment and rewards within your life.
