Don't feel it is necessary to have them understand what you went through.
Yeah, as DesirousOfChange wrote, they wil not be able to. I've tried talking to many about it, and I finally realized that their religious experience is going to church for one or two hours per month, maybe playing on the church basketball team or going to singles night, and having their religion have zero influence on their daily lives. That's all they can relate tol They simply will be incapable of comprehending what being a JW is like.
It takes years to get a complete feel for the JW religion, the JW lifestyle, etc. It's impossible for somebody to truly understand unless he's walked in the shoes for a significant amount of time.