There was a phrase that was frequently used in years past. It became a motto of sorts for pioneers and those who survived the depression and even into World War II. It highlighted the need to be frugal in all that you do it went like this:
Use it up,
Wear it out,
Make it do,
Or do without
You do not need to wear a tin-foil hat, or be a "survivalist" to be preapredness minded. Was your Grandma viewed as a wacko because she canned tomatos, and beans, and jams? Was your Grandpa a little off kilter because he planted a garden, and built his own home?

Being self sufficient isn't so about buying a bunch or wheat and then thinking that you will change your lifestyle when the situation demands it. It is changing it now, so when things get really bad, the shift will not be quite so dramitic. It means going back to the way your grandparents lived.
Living providently means getting back to the basics. It means throwing off the disposable society we live in. It means go back to the basics. One way you can do this would be to go to your grandparents, or some other "seasoned" person, and ask them to show you how to:
- Sew, and make and repair clothes.
- Crochet
- Prepare and cook a meal with basic food.
- Plant a garden.
- Raise chickens or rabbits or bees.
- Wash your laundry without using the machine, then hang it outside to dry.
- Fix your broken washing machine (or research how to do it on the internet).
- Can food and put it away for the future.
- Play games that don't require electronics
- Skin and field dress a deer/elk/cow/fish etc.
- Frame and build a fence or shed.
- Make soap
- Change the brakes or the oil on your car.
Learning the skills and gaining the knowledge that your grandparents posses is not about being extreme or becoming a survivalist. It is simply getting back to the basics. But the skills and knowledge you gain may save you and your family at some time in the future.