what can I do to prepare for an economic depression?

[ApostateAbe]

I feel a bit nervous about the future of the economy. What I hear in the news about the public and private debt makes me believe that the United States could soon be tossed into the Great Depression of the 21st century. An economic slump happens in every generation of Americans, and I have a suspicion that the next slump is going to be more of an oh-please-God-save-us kind of thing. I don't want to be caught off guard and thrown out into the streets and turned into a God-forsaken homeless guy and die of starvation or lack of meds. I'd like to know what I can do now to prepare for the worst. I am a land surveyor, which means that I am out of work as soon as rich people stop developing their property. I bring home around $1200 per month. I have $2500 saved in the bank. I live in a duplex with a $375 rent and about $200 per month in utilities. I am insulin-dependent, and the meds cost around $25 per month (and it is that cheap because I have insurance). Without those meds, I am a dead man. So give me some ideas.