I even wrote a song about this ahah
I think the most important part of finding who we really are is to understand the part of ourselves that is immutable and the part that is constantly evolving. There are some core things that make us who we are all along our life and - almost - never change. Recognizing those things is so much important to build your own value and stay true to your own morality and ethics. It's like a big strong stone that you can rely on in any situation.
Also understanding that there's a part of you that is constantly changing and responding to what happens in your life is vital. To grow; to become a better person; to overcome temporary difficulties.