I'm with "disillusioned 2" on this. Leaving quietly by simply not showing up is often the better way assuming that you have a truly loving family and minimal JW friends.
First of all, consider what your family members are really like - and do you really have a close relationship with them. If they don't live in your area, then you have an even better chance to just fade away.
Best circumstance for most fades is (1) close JW family members live more than a day's drive away; (2) consider a move to the other side of town or county, outside the area where your current congregation is located; (3) slowly ease out of meeting attendance. Miss a couple every month and then only attend once a month. Then once every couple of months. You've "been ill, involved with family issues, looking for a new job, etc." - in other words, use "theocratic warfare" against the "theocracy." You will slowly fade from the minds of the other JWs and when you do show up they will usually treat you well and try to get you to attend more meetings. (4) If you get a shepherding call, don't invite them in. "I (we) have been sick (sick of the organization!) and can't invite you in. Thanks for calling. I'll let you know when we are better."
#1 best way to get out is to be like most normal families or friends who rarely call each other, rarely write each other, and rarely see each other because (a) you really can't stand being around them, (b) you have your own friends and interests, (3) you live too far away to just drop in for a quick visit. Send them a card every so often: "Love you. Kids are fine. Been really busy. Been down with the flu. New job is really working me to death. See you when the weather improves (too hot, too cold, too wet, too windy).
Make new non-JW friends who don't care or aren't interested. Better if they are not too religious - religious people can be every bit as obnoxious as JWs. Before long you won't miss your family all that much. You can see them at funerals and weddings.
JV