You became capable by learning to rely on yourself.
Early on there were people who did not deliver, situations that required you to cover for others, moments when depending on someone else produced failure that you could not afford. You adapted. You built systems, processes, capabilities that made you progressively less dependent on the unreliability of others. This was intelligent. It was necessary. It produced results that lesser self-sufficiency would not have produced.
It also, over time, produced something you did not intend: the inability to be genuinely in relation with another person. Not the inability to manage relationships — you are excellent at that. The inability to actually need someone, to be incomplete without them, to receive from them in the way that genuine connection requires.
The highly capable person's relationships tend toward a specific pattern: they give, they support, they are generous — and they receive carefully, in measured amounts, maintaining always the internal sense that they could manage without what is being offered. The relationship is real. The connection is partial. What is missing is the specific vulnerability of genuine need — and without that vulnerability, there is no genuine intimacy.
Confucius in the Analects describes the Junzi — the exemplary person — not as the self-sufficient individual but as the one who is in right relationship: with their own nature, with other people, with the society they inhabit, with the cosmos. The Confucian understanding of human excellence is fundamentally relational — you cannot be fully yourself alone, because the self is constituted through genuine connection with others. The person who has optimised for self-sufficiency has optimised away the very relationships through which the deepest aspects of the self become available. The capability that was built to succeed has inadvertently disabled the capacity to be fully human.
Jung's description of individuation — the process of becoming fully oneself — is not the process of becoming more self-sufficient. It is the process of integrating the parts of the self that self-sufficiency has excluded: the need, the vulnerability, the incompleteness that are as much a part of genuine human being as the strength and capability the Persona presents.
The most capable people are often the most disconnected not because they are cold or unfeeling but because their capability has become a wall that keeps other people at exactly the distance required for the capability to remain intact. To let someone fully in — to genuinely need them, to be changed by them — would require a quality of openness that the self-sufficient system experiences as threat.
The question worth sitting with: is there anyone in your life with whom you are genuinely incomplete? Not dependent on — genuinely incomplete without? If the honest answer is no — the capability that built the career has cost something in the domain of the self that the career was supposed to serve.