I was in my teens when I first attended Kingdom Hall meetings. My parents opposed. They weren't really church goers. They were bible-oriented without ever really reading it! My mom was captivated by Revelation and my Grandmother was a lapsed Catholic.
I had "reverence" for the bible and a vague notion of God/Jesus et al.
What the Watchtower Society gave me was a channel.
I think of it as me being water and the Kingdom Hall was a kind of vessel. Water takes the shape of what it is in.
I acquired a direction for my time and energy on a certain limited level which gave a focus to my mental energy.
I had a magpie brain with interests in all sorts of things. The Watchtower kept categorizing everything into neat little packets of Good/Bad for me. I began to think of everything in ONE context only as filtered by Watchtower thinking.
Think of it this way. If you pour any drink into a cup with salt in it, the drink will acquire a salty flavor.
All my thoughts were salty with Watchtower persuasions.
My personality took on a kind of veneer of Jehovah's Witness cookie-cutter prefabrication. You could pretty much predict how I would respond to anything because it was the "party line".
There was a streak of the "real" me somewhere in all that.
My individuation was a long incubation.
I was becoming contrarian against all rational sense until I was cast out and then left dangling.
It took ten years to not simply be an un-churched JW (or, an un Kingdom-halled one).
A complete re-education program was necessary to erase what had been done to my mind.
So, the answer to your question is, "Yes", the Watchtower Society gave me the personality I possessed until its influence was cut off.
But, the "me" I never knew was at core waiting for discovery.
I have become me a lot later than one ordinarily discovers one's self.
