It’s a learned skill. If you were abused and your boundaries repeatedly violated, you don’t know how you’re supposed to be treated or how to ask for what you want. When you first learn how to set boundaries you feel like a jerk, even though you are not. You have to reevaluate your other relationships and see if you’ve inadvertently let unhealthy people in your life that walk all over you. If you have poor boundaries and you have a mean boss that dumps everything on you, you don’t know how to communicate your needs professionally and you get overwhelmed and quit. Poor boundaries affects every area of your life and every relationship you have.