That line is something different for all of us as is how we navigate our needs. For example, both Canada and the U.S. were unhappy with British rule. One country had a revolution, the other had several conversations over beer and liquor until independence was granted. Different needs, different methods, but the goals were achieved nonetheless.
This week I want you to think about what the work-life issues are for you, talk to the right people about them, and have a strategy for what you will do if those boundaries are crossed. It can be simple. Examples can be as simple as asking for a more flexible work schedule, (re)defining expectations around email and electronic correspondence, or getting approval for time off. For others it may be a more serious discussion about workplace climate or bullying that is occurring. In some cases drawing that border may include an exit strategy if things don't change for the better.
Work-life balance is a battle. If we don't fight for our cause then nobody will. So declare you independence this year. Fight and advocate for what will improve your situations AND benefit the company. Define your borders. Declare them. Defend them. The decision is yours.