I remember thinking about this when I was still active, but was starting to doubt things I guess:
-I had some friends that were naturally very outgoing and 'vibrant', and loved to conduct talks, loved the field ministry, loved pioneering and so on. Very upbeat, very energetic all the time, both "on- and off-the JW -'clock' ". When the opportunity to go to another country to build a Bethel (I think it was) arose, they jumped at it right away, even though it required moving to a country where they didn't know anyone and had to learn the language from scratch.
This of course gave them their well deserved admiration and 'status' from the 'brothers and sisters'.
I used to think that if they hadn't been JWs, they'd probably be doing something equally "crazy", like backpacking around the world, have an aggressive sales job that required "around the clock" enthusiasm, enjoying extreme sports etc. - In other words, this was the way they were; their personality, witnesses or not.
Me, on the other hand, was probably of the opposite personality: A little introvert, at least with people I didn't know (but I could also be the center of attention in a group, if I knew them), shying away from responsibility in both the congregation as well as in my 'worldly' workplace. I have never liked responsibility, I have never liked standing in front of a large group, I have never liked knocking on doors, I have wanted to but never dared to take a big leap and just go out there and travel the globe. This is my personality. I admit - some of these things I could benefit from working on (and have done so over the years; my current job requires me to talk to new people face to face every day, for instance). But back then, this was me, and there wasn't a whole lot I could do about it.
These friends of mine went on to become elders of course, and by now probably a couple of them have become circuit/district overseers or missionaries (I don't know though, but they were planning things of that sort last time we talked).
-What struck me about all this, was that it seemed that it all came so easy to some people who happened to have the 'right' personality, while others had to really strive in order to do a tenth of what they did. To put it bluntly; if it was all True, and Armageddon was to come next year, one could argue that these people would be saved because they had a personality that made it easy for them and they did what came naturally to them, while I would die simply because I had a different personality which eventually lead to doubts and then unbelief.
I do realize that a standard reply to this would be "You were just jealous", and maybe to some degree I was; who wouldn't want to have a personality like that, especially if it could save your life (as I thought then)?
But that's a little beside my point; If we for the sake of argument say that JWs have the Truth, then some people would naturally have a great advantage over others in a congregation, simply because of their personality. I guess a JW would say that it's not about how much you do, but that you do it with all your heart - but is that really true, in that environment? It's a very slim comfort when you are getting looks and "encouraging" words from elders and well meaning brothers, and in the end you give up because you understand that you'll never measure up, in contrast to the friends you have who happen to have the right personalities.
'Survival of the fittest' there as well, I guess...
I dunno; I guess I'd just like to hear your thoughts on this.