Personally I think "balance" is overrated. I love what I do, it does not seem like work, and for the record, I have a great social life and pursue a lot of interests that have nothing to do with work. My mother had a great saying about being super-busy, saying, "It is better to wear out than to rust out." For the record, I ignored most of what my mother said for most of my life but amazing how smart she turned out to be about many things.
I don't know about you, but I intend to squeeze every last ounce out of every single day, to experience everything I possibly can, and to get as much done as possible during my lifetime. For those concerned about my welfare, let me assure you I'm doing great! My version of "balance" is very long days (I can do this because I have invested in my health) during which I combine lots of work, fun and personal pursuits. If more recreation is your thing, great for you. i'm going to keep living my happy, super-busy life!