[Newby] Need help with navigating between a previous and next position

That's what the booleans are for, here's the complete script:

 using UnityEngine;
 using System.Collections;
 
 public class LevelSelectController : MonoBehaviour {
 
     public bool canMoveLeft;
     public bool canMoveRight;
     public bool canMoveUp;
     public bool canMoveDown;
 
     public bool canMove;
 
     public GameObject previousButton;
     public GameObject nextButton;
 
     public GameObject currentButton;
 
     public float speed = 5.0f;
 
     // Use this for initialization
     void Start () {
         this.transform.position = GameObject.Find ("LevelButton").transform.position;
         currentButton = GameObject.Find ("LevelButton");
 
         canMove = true;
     }
     
     // Update is called once per frame
     void Update () {
         nextButton = currentButton.GetComponent<LevelButton> ().next;
         previousButton = currentButton.GetComponent<LevelButton> ().next;
 
         if (nextButton.transform.position.x > this.transform.position.x) {
             canMoveRight = true;
         } else if (nextButton.transform.position.x < this.transform.position.x) {
             canMoveLeft = true;
         } else if (nextButton.transform.position.y > this.transform.position.y) {
             canMoveUp = true;
         } else if (nextButton.transform.position.y < this.transform.position.y) {
             canMoveDown = true;
         } 
 
         if (previousButton.transform.position.x > this.transform.position.x) {
             canMoveRight = true;
         } else if (previousButton.transform.position.x < this.transform.position.x) {
             canMoveLeft = true;
         } else if (previousButton.transform.position.y > this.transform.position.y) {
             canMoveUp = true;
         } else if (previousButton.transform.position.y < this.transform.position.y) {
             canMoveDown = true;
         }
 
         if (Input.GetKeyDown (KeyCode.A) && canMoveLeft && canMove) {
             StartCoroutine(Move());
         }
 
         if (Input.GetKeyDown (KeyCode.D) && canMoveRight && canMove) {
             StartCoroutine(Move());
         }
 
         if (Input.GetKeyDown (KeyCode.W) && canMoveUp && canMove) {
             StartCoroutine(Move());
         }
 
         if (Input.GetKeyDown (KeyCode.S) && canMoveDown && canMove) {
             StartCoroutine(Move());
         }
 
         if (Input.GetKeyDown (KeyCode.E)) {
             Application.LoadLevel(currentButton.GetComponent<LevelButton>().level);
         }
     }
 
     IEnumerator Move(){
         canMove = false;
 
         GameObject next = currentButton.GetComponent<LevelButton> ().next;
         GameObject prev = currentButton.GetComponent<LevelButton> ().prev;
 
         if (currentButton.GetComponent<LevelButton> ().next == nextButton) {
             this.transform.position = next.transform.position;
 //            transform.position = Vector3.MoveTowards(transform.position, next.transform.position, speed * Time.deltaTime);
             currentButton = next;
 
             if(transform.position == next.transform.position){
                 canMove = true;
             }
         } else if (currentButton.GetComponent<LevelButton> ().prev == previousButton) {
             this.transform.position = prev.transform.position;
 //            transform.position = Vector3.MoveTowards(transform.position, prev.transform.position, speed * Time.deltaTime);
             currentButton = prev;
 
             if(transform.position == prev.transform.position){
                 canMove = true;
             }
         }
 
         yield break;
     }
 }
 

Do note it's not fully done yet, this is about 15-20 minutes of work.

The currentButton is a object the player is on, like the level squares on the Mario map.