At some point your craft is good (or good enough) that progressing further on it is not moving you forward as an engineer. It is often a difficult thing to not

At some point your craft is good (or good enough) that progressing further on it is not moving you forward as an engineer. It is often a difficult thing to notice and a trap one can easily fall into of over-focusing on craft and not realizing you’re plateauing your overall career or skill set.