Torch Script Error - Unity crashes

Here's my current Script:

 using UnityEngine;
 
 using System.Collections;
 
 using System.Threading;
 
 public class Torch : $$anonymous$$onoBehaviour {
 
 public int Charge = 100;
 
 public int LightOn = 1;
 
 public int LightOff = 0;
 
 private bool isLightOn = false;
     
 public float timeOn = 0.7f;
 public float timeOff = 0.3f;
 private float changeTime = 0f;
     
 
 void Update () {
 
 if(Input.Get$$anonymous$$eyUp($$anonymous$$eyCode.Q)) {
     isLightOn = !isLightOn;
 }
     if(isLightOn == true) { 
             if(Charge > 0){
             light.intensity = LightOn;
             }
             
             if (Charge < 16){
                       if (Time.time > changeTime) {
                           light.enabled = !light.enabled;
                       if (light.enabled) {
                           changeTime = Time.time + timeOn;
                           } 
                     else {
                           changeTime = Time.time + timeOff;
                           }
                       }
                 
             
                     while (isLightOn == true && Charge > 0){
                         Charge --;
                         Thread.Sleep(1000);
                     }
             
             
             }
     else{
         light.intensity = LightOff;
         }
 }
     while (isLightOn == false){
             Charge ++;
             Thread.Sleep(300);
         }    
     }
 }

Script formatted.

When do you think does this while loop end? Right, when isLightOn is true. When does it turn true? Right, never.

     while (isLightOn == false){
         Charge ++;
         Thread.Sleep(300);
     }

This whole piece of code needs some general cleaning like Eric said :D