My advice: start to reach out to people around you and getting to know them. It's not just the loss of family and friends that hurts us when we finally get away from the organization; it's also the indoctrination that causes us to push non-JWs away. Get to know people, make friendships based on more than just religious upbringing, and keep reminding yourself that they're ordinary folk, just like you. It can be a huge help in dealing with the sense of loneliness and loss.
If you are still religious and believe in God, there may be a local Christian church that can help you to ground yourself by providing friends and a small but supportive social community. The JWs really do warp our sense of social structure, which makes it painful to leave. But once you have a support group, life can be very enjoyable! Good luck.