Summarize the following:
The more careful you are with your boots, the less they will slouch due to worn-out material. Avoid tugging, pulling, or roughly handling your boots, especially when putting them on and pulling them up. Try to smoothly slip your foot into the boot, instead. Don't leave your boots lying in your hallway or piled under clothes or other items. Take care of your boots and provide them with their own storage space. Lay them flat in your closet with a piece of cloth in between them. Alternatively, you can hang each boot up using binder clips or boot clips. You can purchase boot shapers to fill out the shape of the boot when storing them upright while they're not in use. Alternatively, you can stuff your boots with newspaper or rolled-up magazines, or cut pool noodles to fit inside them. This keeps the material from bending at the ankle and creating creases that persist when you're wearing the boots.
Avoid stressing the material. Store your boots individually. Stuff your boots to help them retain their shape.