Trouble with boundaries tends to show up as the same small failures repeated: saying yes when the answer is no, apologizing for needs, feeling responsible for other people’s moods. Past life regression sometimes gets offered as a way to understand where that comes from. It can contribute something, as long as the contribution is read for what it is rather than what it claims.
A scene of being silenced, or of a self given away until nothing was left, is the kind of thing that surfaces once a person settles into deep relaxation and the imagery starts to feel like another life. There is no scientific basis for taking such scenes as records of real prior lives. They track the beliefs a person already holds and the suggestions a guide gently offers, which makes them the mind giving shape to a present difficulty rather than a cause buried in time. That does not make them useless for the boundary problem at hand.
What surfaces often dramatizes the exact pattern the person struggles with now. A scene of being silenced, or of serving someone until there was nothing left, can put a recognizable picture around a vague sense of being overrun. Sometimes that picture makes the cost of having no boundaries feel concrete in a way that ordinary reflection had not managed. A person can use the image as a starting point and then do the actual work where it belongs, in present-day relationships.
It helps to be clear about where the real change happens. A boundary is set by what a person does when the moment comes: declining a request, naming a limit, tolerating someone’s disappointment without rushing to fix it. None of that is accomplished inside a regression. The session might loosen a belief that having needs is dangerous, but the boundary itself is built through repeated, sometimes uncomfortable, action.
Two problems can creep in. Explaining a present limit as a soul-level wound can become a reason to keep avoiding the harder conversation, or a way to cast another person as a recurring villain rather than someone to negotiate with directly. And when difficulty setting boundaries runs deep, tangled with anxiety, a history of being controlled, or a relationship that punishes any limit, a qualified therapist offers methods a session does not. Approached modestly, regression can soften the fear behind a pattern, but the boundary that finally holds is one the person practices in daily life, with whatever support that takes.