Being a reflective practitioner, of anything worth doing, is one of the best ways to learn, be consistent or adjust when needed. In fact as part of the self learning cycle that you can manage for yourself, reflecting on past performance is a great way to pinpoint, for yourself, changes that are possible and improvements that can be made.
If you’re like me you've got some passion around the things that you're doing. You’re doing them because you believe in them, you want to see them through and you believe there is value in doing them. You get all wrapped up in the work you're doing. You’re passionate about the work. Then, things change, you’re asked to move in a significantly different direction.
People moving into management for the first time should be the rarest breed of people ever. If the stats are to be believed and there are multiple pieces of research to show this, 50% to 60% of first-time managers fail. How and why would you ever want to take on the role as a first-time manager if you knew that 50% to 60% of those people failed in their new roles. This is especially troubling when most likely, as an individual contributor, you are already a Rockstar.