Some people enjoy change; they love spontaneity. Others do not. But whatever your preference, we all have to deal with sudden and difficult changes.
There's change that happens to us, things out of our control, and changes we initiate. If there's something we want to change about ourselves, that requires motivation. When change is forced on us, that requires grace.
They key to making it through changes happening to us is to understand what is, and is not under our control. If there is something you can do to make a change smoother, do it. If there's nothing in your power to do something, there's no reason to worry. Ride it out, be flexible, and look for the positives at the end of any change.