Humans are social creatures. We need to interact with each other. That's why we go to bars when we could drink at home for half the cost.
If the only people in your life are the folk that are going to one day shun you, then you are at the mercy of whatever is controlling them.
So if you're going to leave the JW's, then you MUST have another social life to fall back on, one that has nothing to do with JW's. Get that organised before the axe falls. Join a club, do voluntary work, go to the gym, anything to get you with people.
That's what I did. I learned to play guitar (hey I can now play 4 chords!), joined a library, went to snooker classes, did some art stuff and generally kept so busy that I wondered how I'd ever had time to be a JW.