Where can I meet you, my doppelganger?

In two or three days ago I watched a BBC research video about parallel worlds. A world that exists beyond our own reality. An infinite existence that similar but yet so different from the world that we knew. This theory states that there are many versions of our own self. With the exact same face, posture and hair texture, but living a very different life and maybe have a very different character too. It also states that our reality is overlapping with another version of our reality, but we can't grasp each other world. Each world cannot be cross one another because if ever we meet our doppelganger, the world will be in chaos.

This got me thinking. I'm sure I wanted to meet the other version of me in one of overlapping layers of life. I wanted to see if she does well more than I could do. I wonder if she would be an architect or interior designer? or maybe a sculpture artist? But it will be too obvious. How about, she is maybe a culprit, or a gypsy wanderer that didn't have anywhere she could call home. Maybe she'd flown an aeroplane once a week or teach kindergarten for a living, maybe she's an actress? (maybe not an actress) or a cook in some small restaurant with red interior ambience in Chinatown?

Infinite Possibilities.

I remember when I was still a little kid, I can believe in anything. Believe when our teachers at school usually said that anything is possible if we fight for it. Any dreams would be possible and we can be anything we wanted to be. They also said that it was conceivable to dream about being an astronaut. Like everything is imaginable. Later, when I'm growing up, I realized how cruel that lies are. I know for a fact that many things are unapproachable for some people. That not everyone can't be what they truly wanted to be. That many people are too beaten up about life to thinking about reaching dreams.

We can only daydream about it as vividly as the existence of parallel worlds. Relying on some strangers research and finally at some point, we forget about it.
But maybe it's just how life is works when we're growing up.