Over the years, it’s really only been a small number of people who constantly push for promotion without stepping up their own game. Their failures are often a

Over the years, it’s really only been a small number of people who constantly push for promotion without stepping up their own game. Their failures are often an inability to finish tasks. Or they ask for more challenging work (e.g., singing up to kick off and lead a new project we all want to see happen) and then they just fizzle out. Their frustration (and “bewilderment”) stems from the gap in what they want to accomplish versus what they’re able to accomplish at this point in their career. They reject the feedback that they're not performing at the next career level, because from their POV, they're working hard and feel that their own results and deliverables are the max a person can achieve. While this certainly could be attributed to a communication failure on the manager's part, my experience (and my POV as manager) is that it rather reflects on the individual engineers themselves -- some just naturally get a ton of shit done, some are able to push themselves and grow, and others struggle to grow despite the effort they put in and despite my attempts to coach them.