Again, we tend to be much more so after years of practice, but it is not the point.
And again, I would ask why not?
There was a time when people would pick someone they wanted to emulate, and try to adopt the qualities of that person. If you admired the Dalai Lama, you might meditate.if you admired FDR you might sit in a wheelchair, smoke a cigarette with a flamboyant holder, and do nothing while millions of Jews are killed.
This entire "be yourself" thing is flawed. What if you're an asshole? What if you are Donald Trump? The last thing you should do is be yourself.