"In the simplest sense, a boundary is a property line. It denotes the beginning and the end of something. In the physical world, boundaries are often easy to see - fences, walls, signs, hedges, or sometimes only a slightly different appearance of the lawn. All this signs indicate the borderline of someone's property. Within these boundaries, the owner is fully responsible for the property, while others are not."
"In the mental, emotional, and spiritual world, boundaries - although less easy to see - are just as real as in the physical world. They define our person, who we are and who we are not. We are the owners of everything inside these boundaries. We are free to do with it as we choose but we are also fully responsible for it.
Yes, we can share a lot with other people, but we are the only ones who really experience what is going on in our own heart. We are the only ones who can protect it from bad influences, we are the only ones who can nurture it with good things. God has entrusted us with a life for which we will later be held responsible. But how can we do that, if we don't understand what our boundaries are? That is why we need to learn from the Word of God, where our property begins and where it ends.
I have seen many people struggle with life, just because they do not take responsibility for their own life and expect others to step in instead. They blame others for what happens to them and even for what they do themselves. And at the same time they spend a lot of time and energy on other people for whom they feel responsible. It is no wonder that everyday life is difficult and painful for them. God told us to have self-control, not other-control. We are responsible for our life, not for the life of others."
"Boundaries do not only help us avoid pain or irresponsibility. They are also important for guarding and nurturing the soul that God entrusted us. They are like fences with a gate. You can control what comes in and what goes out. This is very important, because within us are many things that are very damaging to us. These are the things that must leave our property and we need the ability to let them go so that they cannot poison us anymore. If we find pain or sin within us we need to open up and communicate our innermost to God, so that he can heal and forgive us. But we must keep the gate shut closely when evil is present or if sin wants to enter our life in order to protect the good that is inside.
On the other hand, we need to be able to let our guards down when the danger is gone and open up for the good things outside. Other people may have good things to give to us as well and we need to open up to them.
So boundaries are not walls but they are no open range either. If we want to grow, we need to control what goes in and what goes out. But if we lack boundaries, we allow many bad things to enter our life and good things to be destroyed by them. We will be tossed around by the waves created by the world around us and experience a lot of problems, fears, and helplessness in our struggle against sin.
If our boundaries become walls, if we close ourselves off, then we hold the bad and painful inside and keep the good out. People who have suffered from abuse have a tendency to do that and they need to learn to open up in the right way."
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!