More "-isms" / Adult Responsibility / Changes of Life

I hope this doesn't come across as a "soapbox" rant, but more of an expression of personal experience, or a heads-up to what could happen again .............
Anyway, about mid-morning last Friday, my supervisor called me into her office.  I didn't know what she wanted, nor what was up.  I went in, an she told me that my full time job (of almost 19 years) is now classified as a part time position.  My options are to remain in my current position (but, as a part time employee) -- of course, the problem is that my income will be cut in half, and I will have to pay BIG BUCKS for insurance.  My husband is on my insurance, and he has health issues, so this option really wouldn't work too well for us.  Option two is for me to resign via "Reduction in Force", and I'll remain on the payroll (but not on the premises after today) until June 1st.  I guess that's like a severance package.  Looking at the positive side, I have all day/every day to look for a new job and submit applications, and we still have insurance for the month of May.  I'll still have a paycheck on May 1st and June 1st.
She explained the situation, asked whether I had any questions, and gave me a printed letter of what she'd just explained.  She also told me that I could call her over the weekend if I thought of any questions regarding the situation.  Of course, I was overwhelmed, shocked, and somewhat confused about what to do.  She told me that I needed to leave the premises after our meeting, think about it, and decide what would be best for me and my family.  I have to give her written notice of which option I chose after Soc. Justice class TODAY.  Of course this is not the end of the world since I have the support, prayers, and encouragement from family and friends.  But, it's just bad timing.  I've not totally freaked out yet, which is a definite sign of growth for me.  I'm trying to look at the big picture, be positive, and proactive in finding the ideal job for me. 
Anyway, my message to all of you is that you should ALWAYS HAVE A PLAN "A-Z" in the various phases/stages of your life.  When I was a coming up through school as a child/teen, I'd always hear people say that you need a Plan A & B (in case your first plan doesn't work).  Well, as I get older, I realize that A&B are not enough.  You need multiple plans to avoid as much disappointment as possible, and so that you won't be caught off guard by those who think they have power over your life.  I'll be all right, and appreciate all the skills/knowledge/wisdom/relationships, etc. that I've gained over the years.  I just want to impart a little wisdom to those of you who have not yet faced the world of work, or at least on a full time basis (or, in a situation where you have to foot your own bills and living expenses).  It can be done, but you've gotta keep your eyes and ears opened at all times.  :-)