http://www.zcoil.com/
Fitted for these initially by a DPM and was gifted them from my family the day I was hired for Walgreens as an intern. Replaced them every two years or so even though I don't practice anything that has me standing at all. I'll still wear them if I know I need to on my feet all day. There's also Kuru's on the market, but I've never worn them.
If you have these sorts of foot problems/concerns, this is where a visit to our DPM colleagues is probably in order. We're not foot specialists, for these sorts of matters, you should actually consult real foot specialists. Yes, there are lifestyle modifications, but we are in the 21st Century medicine where we have options. Orthotics has really come a long way even in the last ten years from the material science improvements.