I think this is important. One of the most career oriented people I know, call him a mentor of mine, kept entire binders full of everything he did. Every accomp

I think this is important. One of the most career oriented people I know, call him a mentor of mine, kept entire binders full of everything he did. Every accomplishment. He prepared for performance reviews like he was going to war. As a manager I suggested to my reports that this in addition to proving your work, it also helps as a way to understand whether you are stagnating at work, or continuing to learn and evolve.