Aside from having a sufficient supply of food and water, the absolute most critical point is to get healthy and "in shape" now (if you already are not).
When there will be social unrest, people WILL die. Depending upon how severe the situation, many people will die. Disease and illness will be killers.
Hospitals are currently short staffed and CLOSING left and right. You do not want to have any avoidable reason to have to visit the emergency ward when everyone else is too. All members of your family having a healthy body and immune system is critical to survive. If you or a family member have disabilities, are diabetic, obese, etc... get your necessities and your body in order NOW so that you won't be relying upon your government(because a large percentage of the populace will) to assist you in a crisis. If you're used to eating ALOT, get used to eating a bit less since your food source will last longer if your body knows that your caloric intake is satisfied but you're not over eating.
If you smoke, stop smoking... it's easy if you have other more important things to worry about. I've been a smoker for ~20 years and I had quit just over a year ago. Feels great! I'll keep cartons of cigarettes to barter with.
Another example; I have had very poor eyesight from a young age. -5.50 in both eyes. I recently had the LASIK procedure performed and cannot say enough positive things about it. Yes, it is VERY expensive($4600 in my case). But in a SHTF scenario, broken eye glasses or lost contact lenses are no longer a concern especially if you have to fight. So a visit to the optometrist is avoided.
Also, good oral hygiene is essential. I had also had my wisdom teeth extracted last year(they were causing a bit of discomfort) so as to not have those to get in the way of normal living if the dentist is not readily available in the future. So take care of your teeth so that they will take care of you.
If you can imagine an economic collapse such as the dollar losing its place as the worlds reserve currency, hyperinflation may cause the eye correction procedure or a visit to the dentist for a simple tooth ache to either be non-existent, or cost like $10,000, $50,000, $100,000... if you think those types of procedures are a luxury now... wait until it's too late. In the collapse of other countries, bread would cost $1000.00... Gasoline $400 per gallon.
These are things to keep in mind in case the time to get back to normal takes years... or never.
The normalcy bias
http://en.wikipedia.org/wiki/Normalcy_bias no longer affects me and I really don't think everything is as it should be in the world today, so my views may differ from yours.