Your manager has indicated that you are not promotable to a higher position, and he is also doing nothing to promote your growth, development, and success. You asked him the right questions, especially in terms of the specific steps you should be taking, and he gave you no guidance whatsoever.
The real problem is that your manager has put this non-promotable label on you. When managers have this image of an employee, they often act in a way to perpetuate it.
Fortunately, there are steps you can take to improve your promotability, whether at this company or elsewhere, and all of these steps are premised on education. If you are looking for a promotion, you should be taking technical courses to build and broaden your expertise, and you should be taking business classes in leadership, communications, supervision, and management. You can find a broad array of these types classes through local colleges and universities, professional training organizations, and online programs.
You can easily let your manager's comments become a self-fulfilling prophecy, or you can take some personal development steps and set the stage for a more self-fulfilling career.
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