You're the only one of you.
( *Starts mentally singing ME! by Taylor Swift and Brendon Urie: 'I'm the only one of me! Baby, that's the fun of me!...'* Lol.)
Hooman-bean-brains are one of the most complex things in the known universe (I know, right? We're special!) and yours is just that: yours.

No-one else's brain will ever work in exactly the same way as yours does.
We may come to the same conclusions or think along the same lines as someone else - but at the end of the day our brains are ours alone: entirely unique.