I’m sorry to report — in case you haven’t already noticed — that parts of your work or your life that you thought were solid and safe can totally fall apart, sometimes without very much warning. This may never happen to you. If it does, it may not last very long. But it’s an eventuality that’s in the cards for too many people, too often.
One very normal reaction to this turn of events is to give up, to cry “Why me?”, and to go hide under the covers for a while, or maybe forever.