cfc
You need to work on something called proprioception. Stand on one foot with your eyes shut and knee slightly flexed. It'll be harder to do on your injured side but persevere, aim for a minute each side initially. This will help and you won't go over your ankle as often once you've practiced this.

As the Fireman says, a bit of rest and applying some ice (within 3 days) then cold heat cold compresses and some friction massage should help the healing.