The first thing you should do is to keep your heels warm, because cracking in the heels is often seen in winter, and keeping your heels warm will prevent the skin from drying out and cracking. It is also important to keep the feet clean to prevent fungal infections in the heel area. It is important to avoid frequent contact with cold water because cold water can cause increased brittleness of the skin on the heel, which can easily cause cracking. You can also use medications, such as tretinoin econazole cream applied topically, which can lubricate the skin and reduce the chances of cracked heels.