If you look for greener pastures whenever your organic focus starts to wane, you'll never make it through the challenges that create real value.
This resonates with me strongly. As someone who's started and stopped a lot of projects, I've often been afraid I would never settle on one thing. But now, even though I'm in a difficult phase with it, I feel more committed than ever to my current project.
I think this is in line with the post: I spent a lot of time in a "divergent phase", exploring options and testing possibilities (multiple smaller projects). Now, I'm in a "convergent phase" and focusing on just one thing for multiple years, even though it's hard.
However, I think the article is implying that deep thinking about your values and interests when you step back can help keep you from switching focus for shallow reasons. Perhaps you re-engage with a renewed sense of purpose. However, if you do switch after deep thinking, you'll hopefully be more resistant to further randomization.