It is possible. If you love your job it is also exciting! Just did it.
I’ve been working 16h yesterday. What a great and productive day! Seriously. Started 8AM and finished half past midnight. At the end of day (evening) just before falling asleep i was smiling and thinking about that whole intensive day.
But it is good just once in a while. I work hard, but health is the priority and as an old grumpy thirty something years old guy i now that most powerful tools for hard working people are: family time, good quality sleep and some outdoor activities.
My wife would have killed me if she knows about yesterday. Luckily she took our kids on a short vacation and she didn’t know about that. ;)