In order to be who you are, you must be willing to let go of who you think you are.
Today I spent 10 minutes in a meditation where I focused on my breathing. I used a free app, Insight Timer, which I highly recommend. With your permission, it turns off the notifications on your phone while you are using it which helps to avoid distractions.
After that, I practiced a focused meditation upon the above quote. I love short quotes like this because there are so many ways you can take something like this. After some contemplation, I decided that for me, in this moment, it means that you must let go of your own pre-conceived notions of self, those established in your childhood, youth, teens, 20s, and however far past that you have gotten. It means disregarding the labels, good and bad. In letting go of the labels, yours for yourself and others for you, you will be able to find your own self of the moment.