Most people think a boundary is a wall. Something that shuts people out, says no to life, and keeps good things from happening. If that is what you think a boundary is, it is worth completely changing your mental image. A boundary is not a wall. It is a property line. It marks where you end and someone else begins. It defines what belongs to you — your body, your time, your energy, your values, your emotional space — and what you are responsible for. Just as a fence around a house does not keep the world out, it makes clear what is inside and who has the right to enter. Without boundaries, other people can treat you in whatever way they choose. They can make demands on your time with no concern for you. They can push past your limits, dismiss your feelings, or use your energy as if it were theirs to use. Without boundaries, you end up taking responsibility for other people's emotions, their problems, their misbehaviour. Your life begins to feel chaotic and overwhelming, because the edges of it are completely undefined. With boundaries, something different happens. You become clearer about what you value, what you will protect, and what you will not accept. You stop feeling responsible for everyone else's state of mind. You start choosing how your time and energy are spent, rather than letting others make those choices for you. Boundaries do not confine you. They free you. The person who knows their limits is not boxed in — they are grounded. They know where they stand, which means no one can push them somewhere they do not want to go.