In another thread I got down voted much for saying work - life balance is needed. This quote brings to light that it's really a product of experience. That experience allows proper planning, a clear roadmap, and makes it easier to stay committed to a project/team/startup/X Inc.
Perhaps I should say that If you find your self working late hours, adding to an already 80 hour work week your probably missing some key knowledge and experience. If you can't plan at least a day or two in advance then try to look and find what knowledge your missing in order to plan and execute effectively.
A quickie on gaining exp: - slaving away at some corp isn't so bad as long as you gain experience - joining an existing startup is a good idea for learning the ins and outs without the pressure - joining an incubator to boot camp these experiences
Obviously as the article stated working on something worth while is an absolute motivator.
I apologize for any grammar and spelling mistakes now because typing on the road from an iPhone is a pain.