well, i tried exactly that and it backfired big time, because in the end,
i still just didn´t feel like me, really "right".

I don´t think we can just "choose" who we want to be, neither can we choose what we like or enjoy.

For myself, I can say that i discovered that i really need is to connect
to everything, the past, and my past me, integrate all the crazyness
inbetween, and then just be whoever it is the person that shows up in the end. which i still haven´t figured out. I have noticed though,
that a lot of my needs and wishes and behaviours are really still there,
and grounded in my personality and just come out naturally, if they get a chance.

Of course, I don´t know what you were like before, if you were able to be and act out what you felt like?

You talk about being punk/metal. Well, do you still like that? Do you still enjoy being within that scene?
I really know not much about it, but is punk/metal really an identity?

Because NOone is just one thing. People in that scene aren´t all alike, are they? Everone is different. What i mean is, you can be in the scene, but it´s just a little part of your identity.

In the end, I guess most of your identity is based on what you like and don´t like, what kind of people you enjoy spending time with, what your personality is like (are you funny, shy, very empathetic...)

It´s not really something you get to choose. It´s already there, and developping further. You just need to find it.