asking yourself, “who am i now? ” is one way to determine career plans that will fit your interests.

Yes, it is one way to start. Then you also have to ask what you want to be.  

Explanation:

From there, you can do a gaps analysis of what skills you have or don't have and what you need to develop to achieve where you want to go.  

There are many resources online about skills/competencies gaps analysis tools to help you through this.  

Depending on what you have identified as gaps, you work on developing those skills/competencies either through formal learning, mentorship, stretch projects, etc.  There are many methods for developing various skills. Discuss your options with a mentor or teacher.