What about a walker with wheels and handles to hold onto (modern kiind with a seat that you can turn around and sit when tired are great) Perhaps you love shoppiing so much that cell memory kicks in and you really don't have to "think" about what you are doing anymore if a good possibility. This is one reason learning to use our body thru exercises to react more automatically again....use another set of muscles to do a common thing. Try shadow boxing to reconnect... do a lot of cross-over movements and twisting daily. It is amazing what these can do.