Written by the author of "How to find yourself : why looking inward is not the answer", Brian S. Rosner, this article notes the issues that can arise with such a perspective. Seeking our personal identity by merely looking inside ourselves does not allow us to live life to its fullest, or as it was intended by our Creator. Designed as social beings, we need to consider ourselves not only inwardly, but also outwardly, to those around us, and also upwards to God.
"Most people today believe that there is only one place to look to find yourself, and that is inward. Personal identity is a do-it-yourself project. All forms of external authority are to be rejected, and everyone’s quest for self-expression should be celebrated. This strategy of identity formation, sometimes labeled expressive individualism, is the view that you are who you feel yourself to be on the inside and that acting in accordance with this identity constitutes living authentically."
https://www.crossway.org/articles/5-myths-about-your-personal-identity/