DJS, I read Seeking Alpha for investment opinion. Given your broad strokes here, you could likely benefit from the attention to detail there.
There are no easy answers because there are too many variables and wild cards to consider. I didn't feel this way prior to 2008 when clear investment paths existed. That said:
First, invest in yourself in practical ways. Many people who learn trades or 2 year-ish stuff in Community College education will do OK. There's always a need for Nurses and that might actually increase if technology pushes some Doctors out of business. Example - an injection of stem cells instead of joint surgery.
Second, hold some gold/silver. No, I'm not a gold bug, nor do I think hyperinflation is coming. Just painful inflation with gasoline, meat, etc. You never know.
Own a house? Think about solar and if you have a well, install a hand pump. If the electric fails, how long can you go without water? Get a chest freezer, put it outside (saves electricity in winter) and buy unadvertised specials, especially at BJ's/Costco/Sam's.
Stocks? Very tentative but I suggest dividend stocks in tobacco and liquor. Also, closed end funds in emerging market debt.
Don't put much faith in the US "recovery". Walmart's annual report said much of their revenue now derives from food stamps and other welfare programs. If increased debt and financial speculation was removed from GDP calculations, things would look ugly.
but if you're in the dwindling middle class, I'm really not giving you a revelation here.
metatron