Throw out your flip flops and flat shoes
They will do nothing but screw up your feet, and I'm living proof! After spending 90% of the summer in flip flops and ked-like shoes, I am now suffering for it. I have plantar fasciitis, which means the muscle that supports my arch (and is connected to every toe and my heel) is inflammed. SO now I'm sitting at work with a very unfashionable foot brace and taking pain meds ALL BECAUSE i wanted to wear flip flops and cute flats like everyone else.
So heed the warning. Supportive shoes may look dorky, but a corrective boot is way dorkier.