It’s who you are in this lifetime, and no other.
Every time you incarnate, you are a unique entity. Sure, the soul is the same eternal being. The body, however, is different every time. You don’t actually even have a body in most incarnations, but that is a different issue.
The Core Frequency is my way of conceptualizing the union of eternal soul with temporary body/mind. Every body has its unique challenges as well as its unique talents and abilities. There are genetic traits that can predispose us to various ailments or addictions. We also inherit personality aspects and more things than we even know about.
When you clear your issues, the emotional traumas and disappointments that distort our energy, we clear space for the Core Frequency to shine.
Here is a video I made about the Core Frequency. https://youtu.be/mkStpzsEwxw