Try not to go into this already saying you are going to fall apart during this. Kind of a self-fulfilling prophecy. Take things one day at a time. Find things to do to keep yourself occupied constructively. This doesn't have to turn into a crisis for you. You can do just fine if you can start off in the right mindset.

I'm sure this was a shock to you, but these things can happen from time to time and we just have to find ways to work our way through them. Hang in there.