One thing that could be helpful with footwear is to remove the inner part of a pair of GOOD running shoes that you might be considering replacing anyway. I inserted a pair in my work boots that came out of any old pair of Nike running shoes, and it helped immensely. The support is generally better than most anything you’ll find in the drug store shoe insert aisle, by far (and I’ve tried most of them). A decent article on the subject is here. I’ve been surprised at how well running shoe inserts hold up even when the main shoe is worn out, so I just recycle them into work shoes or boots (plus, they’re already fully conformed to my foot).