I am sorry if you got notice today, or during the last few days/weeks. Although uncertainty definitively causes fear, be confident that you and your family are going to be fine, and that most people leaving the Company report better working conditions (more stability, better salaries, more appreciation, etc.) after leaving it. There IS life after HP, and a world of opportunities await.
To assist you with important things to consider during your transition, please follow these steps at http://www.hpalumni.org/asap.htm . We have put together a lot of valuable advise to help you overcome the most frequent issues following departure. You can join the HP Alumni Association - free of charge - here: http://www.hpalumni.org/join .