Thank you for sharing this!
I liked his story about finding his voice. It reminds me of Beckett who wrote the Trilogy in French, I believe, for a similar reason. A need to strip himself of his native language in order to find something barer, and more concrete. Beckett actually wrote the entire novels in French though, and then translated them back into English himself.
I think that finding a voice is the most important first step for any writer. I know I'm still working on it. But it's been a goal for a long time.
As for Murakami himself, I enjoy his earlier work much more than his more recent stories. Early on it felt like his writing really was like improv jazz, while lately it feels much more constructed and formal. Especially his first novel, which he talks about in this essay, felt very free and fun.