The level of a person's ambitions. It's not uncommon for people to give the answer "I want to be number 1, the main authority in the industry," but few people actually do anything to achieve their chosen goal, especially within the agreed time frame. And only the actions taken (and their results) give an idea of the real scale of the personality.
And "making yourself" is not easy: too much affects the result. There are no unimportant details here. As with everything, you need to act systematically.
This book offers just such a plan, a checklist that is easy to modify for you personally. After reading and filling in special tables (cross-section of strengths and weaknesses, prioritization, ways to develop key skills, image change, methods of self-promotion.