Terrible cracked heels

I had great feet until I started wearing flats every day in middle school....now at 24 there starting to get really painful..no matter what i do i cant get them looking good..i soak, exfoliate and moisturize... but it lasts a couple days and back to looking bad .. please share with what helped you and what your daily routine is for caring for your feet ! .. I never used the foot peel but I'm wondering If that will help ? ? Thank you for any feedback!