The big difference between leaving a relationship and leaving a job is that even if you're in a good place, a job will never last for life. Some relationships will.
Anecdotally, I don't know a single person that has regretted leaving a job when they decided to (disclaimer: most people I know work skilled jobs). Even when people come back to the same company, it's usually on a different team and with a 30% bump in salary. So I generally agree, once you're thinking about it, it's probably time to go, you'll only end up better off.
Relationships are a lot more nuanced, hence the lesser benefit the article reports versus leaving jobs. I'd want to see it broken down by relationship length, age, happiness level and other factors before making any serious decisions based on this article.
Anecdotally, I don't know a single person that has regretted leaving a job when they decided to (disclaimer: most people I know work skilled jobs). Even when people come back to the same company, it's usually on a different team and with a 30% bump in salary. So I generally agree, once you're thinking about it, it's probably time to go, you'll only end up better off.
Relationships are a lot more nuanced, hence the lesser benefit the article reports versus leaving jobs. I'd want to see it broken down by relationship length, age, happiness level and other factors before making any serious decisions based on this article.