What are you proud of?

Dear Mr. Murakami,
Making a good question is very hard, and I don't know if this will be a good one. But I just wanted to know, what are you most proud of? Like, if you had to say " yes, I did a lot of mistakes, but I'm very proud of this and I don't regret doing that" , what would be your "this/that" ? Thanks for reading! 

Dear Adela,

I am a man of many faults. But I was doing my best when I wrote my books. Absolute best, nothing less. I am proud of it.

Thanks for reading, yourself.