It might surprise you what you can do when your back against the wall. Though my Army training might give me the edge over some. 
Will give you a wide berth then - I would probably end up roasting on the camp fire - feed you for a good month or so
Seriously, I couldn't survive anything like that, too old and need my meds. I reckon a person would need to have had some survival training anyway.
TBH I'm so picky I would rather be dead, no toilet
no water to brush my teeth
not toothpaste
Nope too much of a wimp - I suppose we could all congregate at yours and you could look after us
I do however know of someone from the forces who had a breakdown and lived in the woods using survival knowledge for quite awhile.
