Buy shoes that fit is extremely important. Do not buy something that does not fit just because it is under sale or have run out of size. 

If you have a shoe that is too big, try putting some tissue papers or cotton around it (that is if you could not find a shoe pad). 

Once in a month or so, use a pumice stone (available in most pharmacy) to rub your foot gently on the base area to remove any unwanted skin. 

Use moisturizer moisturise on your foot as well. 

To relief your foot after a hard day of work, add a few drops of natural oil (i.e. baby oil, almond oil) to a tub of cold water. Place your foot there for about 10 minutes. Then place your foot in a tub of hot water for another 5 minutes. You might want to add a few drops of lemon juice to remove the smell. Wipe the excess water then apply some moisturizer on your foot. Your foot should feel terrifically great after this.