It really depends on just how/why society has collapsed. In most cases one of the biggest issues is simply going to be that with only subsistence agriculture available the industrialized world as a huge population compared to its carrying capacity. The result is that until most people starve you're going to a have a lot of very hungry people who will do literally whatever it takes to feed their very hungry children. Something like a massive crop failure, extreme volcanic activity, nuclear war, or a large asteroid impact could both cause conditions to be unfavorable for crop growth and there you have it.
Anyhow, I am too far from any family to have a reasonable chance of reaching them. If I had enough warning to have my friends meet up with me I would (6 person group). I would then head out to the local national wild life preserve which is a located in the middle of a rather large swamp. The basic plan then would be to secure control of one of the observation towers located in the park and live atop it. There's extremely abundant food in the form of birds, only one easily accessible path, and it's obscure enough that you're not going to have other survivors flocking to it as you would with some sort of valuable containing factory.
I'm not a survivalist, but my hobbies mean I've accumulated a moderate cache of supplies. Something along the lines of 40 MRE's, survival books, 5 fire arms and a couple thousand rounds for them, a rather large amount of camping gear, a kayak, and items that could be used in the preparation and preservation of food. My friends between them own a plane, sailboat, generators, a solar panel array, and a military mobile command center on a deuce and a half frame.