Sadhguru
How many hours of work a week is too much?
Don't measure work by hours
If you love what you do and are creating something that truly matters, it should not be defined by hours. If you work only to earn a living, you will always look for ways to reduce the hours.
How much work is too much work? There's no such thing, if you're doing something you really love to do, if you're creating something that truly matters.