The first step in your career planning process should be through evaluation of who

self assessment

Explanation:

self-assessment - it is the first step of career planning at which the more focus is on how to assess yourself. in this stage person need to quantify themselves, they need to know what they want, need to understand their positives values. In this stage, the candidates are more focused to choose the goal that more suits their skills and attribute.

self-assessment is the foundation step or stage for future growth. This considered being the most important step in one's life as it decides the mood of the career.