I also have chronic tendonitis in my left foot. My feet are very narrow and are different sizes. The smaller (left) foot really takes a beating because even with orthotics, the shoe on the left foot is too big. I've had chronic plantar fasciitis for months now. I also have arthritis in both feet; the pain is off the charts and sometimes I can barely walk or stand (especially after exercising). I also need to lose weight but when you can't walk without pain, well, that's very hard to do. I tried a modest exercise program and developed sciatica. I know that I need to stretch more. Finding the discipline to lose weight and to stretch when you're depressed and don't feel well is not easy.