Relationships · Understanding Codependency, part 7 of 9 · 2 October 2026 · Charlotte Himsworth
Boundaries: The Kindest Line
A boundary is not a wall. It is the shoreline that lets a relationship hold its shape.
For many people recovering from codependent patterns, boundaries are the heart of the work, and the hardest part. If you learned early that your needs were a burden, saying “no” or “that doesn’t work for me” can feel frightening, even cruel. It is neither.
What a boundary is
A boundary is simply a statement of what you will and will not do, and what you need to feel safe and well. It is about your own actions, not about controlling someone else. “Please don’t shout at me” is a request; “If there is shouting, I will leave the room” is a boundary.
Why they are kind
Boundaries protect relationships as much as they protect us. Without them, resentment quietly builds. With them, people know where they stand, and love can be given freely rather than extracted.
Starting small
Begin with low-stakes situations: declining an extra task, ending a phone call when you need to, saying “I need a moment to think.” Each small boundary teaches your nervous system that you can survive someone’s disappointment.
Simple phrases
“I can’t take that on right now.” “I’m not comfortable with that.” “I need to think about it.” “That doesn’t work for me, but here’s what I can do.” You do not need to over-explain. A kind, clear sentence is enough.
Expect discomfort
Guilt often arrives when we first set boundaries. It does not mean we have done something wrong; it usually means we are doing something new. The feeling eases with practice.
When boundaries are not enough
If someone repeatedly ignores your boundaries with threats, intimidation or harm, the problem is not your boundary-setting. Please reach out for confidential support; part nine lists where to turn.
A practice
Choose one small boundary to set this week. Write the sentence you will use, practise saying it aloud, and notice how you feel afterwards.
This article is for reflection and education, not a substitute for professional support. If it brings up difficult feelings, please be gentle with yourself; part nine lists places to turn in the UK, including Samaritans on 116 123, any time.