How to change the enum value of an instance of a prefab being clicked

Here is the whole script just in case:

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class BallDirector : $$anonymous$$onoBehaviour {

 public enum Direction { North, NorthEast, East, SouthEast, South, SouthWest, West, NorthWest };
 public Direction myDirection;

 // Use this for initialization
 void Start () {
     myDirection = Direction.East;
 }
 
 // Update is called once per frame
 void Update () {
     GetInput();
     Debug.Log(myDirection);
 }

 void GetInput()
 {
     if (Input.Get$$anonymous$$ouseButtonDown(0))
     {
         RaycastHit2D hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
         if (hit.collider != null)
         {
             if (hit.collider.gameObject.tag == "BallDirector")
             {
                 //NEED HELP HERE
                 myDirection = ChangeDirection(myDirection); // This doesnt work because it changes all instances
                 hit.collider.gameObject.GetComponent<Direction>().myDirection = ChangeDirection(myDirection) // It wont let me do this
             }
         }
     }
 }


 public Direction ChangeDirection(Direction dir)
 {
     switch(dir)
     {
         case Direction.North:
             return Direction.NorthEast;
         case Direction.NorthEast:
             return Direction.East;
         case Direction.East:
             return Direction.SouthEast;
         case Direction.SouthEast:
             return Direction.South;
         case Direction.South:
             return Direction.SouthWest;
         case Direction.SouthWest:
             return Direction.West;
         case Direction.West:
             return Direction.NorthWest;
         case Direction.NorthWest:
             return Direction.North;
         default:
             return dir;
     }
 }

}