Things I've learned in summer '09:
-trust (almost) no one*
-you can never have/read enough books
-mooching money (or anything else) feels cheap no matter what
-never turn your back on your life lines
-Chuck Klosterman is a genius (read Killing Yourself To Live, so good!)
-being an asshole is basically never a good idea in the long run
...and the grand finale..
-don't take anything personally, IT'S GOT NOTHING TO DO WITH YOU!
*there's usually one or two key people in one's life that are exempt from this