We are all drawn to the possibility of becoming our "best self" and work towards confidence and a great career.
Bestselling self-improvement books add credibility to this idea because they are often authored by highly successful people who assure us that we can also find the same success.
With self-improvement content, you can easily think improving yourself means changing into a new and different you.
While desiring to improve is valuable, it is very different from believing you have to become someone you're not to get what you want.
Each person has a unique personality and strengths that can help them achieve their goals. You are then the best person to formulate a plan for self-improvement.
To get started:
The Kaizen Approach to Achieving Your Biggest Goal (The Philosophy of Incremental Progress)