Where you need borderlines/limits:
- Education of children (there you need a lot)
- Weekly working hours
- Minimum sleeping hours
- Exploitation of the world resources
It is like the old Zen koan I got reminded of thanks to Avani at Avani-Mehta blog:
Nan-in, a Japanese master during the Meiji era (1868-1912), received a university professor who came to inquire about Zen. Nan-in served tea. He poured his visitor’s cup full, and then kept on pouring.
The professor watched the overflow until he no longer could restrain himself. "It is overfull. No more will go in!"
"Like this cup," Nan-in said, "you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup?"
Time, space and resources are limited. When you want to change in most cases you need free space. The most important area is yourself: Your time, your mind, your health, your personal resources.
To respect also the of other people borderlines is needed for our all living together as every living individual (human or animal) needs a territory - some place to live and hence parts of the resources. This applies to physical needs and either to non-visible things like individual thinking.
So be aware of existing borderlines - yours and those of others. And set clear borderlines to ensure that everything in your life gets emphasized appropriately.