"Clear boundaries" refers to having distinct limits or rules that define what is acceptable and what is not in a particular situation or relationship. Full definition
The key to success: Setting clear boundaries between work and home, and communicating openly when there's a problem. (fortune.com)
While you might experience resistance as you begin to set clearer boundaries between your personal needs and work, always remember that you and only you are in charge. (distinctiveweb.com)
People with clear boundaries, who know themselves well, would never choose people - pleasing or a fun time over their values. (relevantmagazine.com)