Many of us do not have healthy boundaries, for example, we do not readily differentiate between what is theirs and what is ours, and therefore we end up carrying more than our share and often more than we can handle. There are many reasons for this, one being the desire to be appreciated, but it is often the result of a lack of purpose and the search for an outward substitute to give our life meaning. This is especially true when we do not know who we are, what we stand for and what exactly we are doing, which can make us vulnerable. Our walls, however, can be fortified just by knowing our own mettle, i.e. what we are made of. "Mettle" is defined by Merriam dictionary as vigor or strength of spirit or temperament, which I am interpreting as a healthy self-confidence and sense of purpose. Once we know our purpose, that becomes our business. When we are running our own business and are acutely aware of our responsibility for its success, we are less prone to overextend ourselves outwardly in terms of our focus and efforts. We are also careful not to let anything or anyone in that would undermine the business. We can still listen to others, pay them some attention, give them some sound advice, but after a while, we want and need to get back to our own business. Once we are are confident our business is running efficiently and prosperously, then can we give the start-ups and/or the faltering businesses a helping hand.
A good example of this would be the addition of a subsidiary. The German word for subsidiary is "Tochtergesellschaft" which literally translates into "daughter society." From my experience in the corporate world, subsidiaries are often financed and promoted by the "mother company" until they are capable of both turning a profit for both and of providing services and supplies for the parent company. Not having had children myself, I do not speak from experience, but I am sure this concept can easily be transposed to a family structure where parents probably should not be having children until they are fully able to support them and groom them toward independent functioning and living after which the child should ideally provide care for the parents when needed.
A second example would be partnered companies. Such companies often partner up with each other in order to mutually expand their service and product portfolios and to gain footholds in additional markets in a type of win-win collaboration. In human terms, partners complement, and even complete, each other in terms of what strengths they have or what they bring to the table. If one has little to offer or could be viewed as a liability, reputable companies will want nothing to do with one, or if one do not exercise discernment, one might ally yourself with a parasite, instead of an equal partner. Interestingly, when one truly cares about running one's business well, one is usually able to avoid such leeches and instead apply sound judgment in any negotiations.