I have joked and even asked the other day on this forum if i could change to ENTx. OK, S's make the world go round but its the N's that are the intellectuals. I know i can never be that.
Example, i did enjoy the film Fight Club but you know i sat there for so long trying to figure out that they were both the same person. Yet, put me in a situation where i need defuse people's tempers and i'm great.
I was hoping to find a perfect type on here, oh it doesn't exist so i think i'll stay esfj.
With regards to your friends, you shouldn't tell them what type they are. Only they can come to that conclusion on their own. When an INTJ is telling someone they are right all the time, its not productive. I used to in jest wind my ex up when we were sitting having a discussion about something. I would throw something random into the conversation just to see that look, only for a moment where i can see the cogs going, trying to find the connections.
We S's don't take everything so serious, maybe you need to lighten up around your friends a little.
So the SFJ's that were healthy, did they have a wider scope of vision, willing to take in new information, possibly change their beliefs as they have had time to reflect on what was said.
We have talked about this on the SJ forum. Conclusion.
You lot need to show us some love.