If you have children, teach them how to use the phone and who to call for emergencies. Post all of the important numbers by the phone. Be sure to include everything from 911 to your work number. Do not assume that it is easy for everyone to get a hold of you when the need arises. Also have the phone number of a close friend or other family member in case you are not available.
Financial crisis seems to come at the most inopportune time.
This is usually something unforeseen and costly. The best offense is a good defense. Your spouse may have been the one that took the car in for a check up or made sure that the credit cards are paid, but that responsibility is yours now. Keep your bills paid and up to date. Borrowing from Peter to pay Paul may work for a while but it will eventually catch up to you.