im new to node and js

i have a utilities class that is build like this and can be initiated by Utilities.newObject and then used as this Utilities.someMethod(args, callback):

```
exports.newObject = function(){
  return new Utilities();
}

var Utilities = function(){

  this.method1 = function(args, callback){
    //
  }

  this.method2 = function(args, callback){
    //stuff
  }

  this.method3 = function(args, callback){
    //stuff
  }
}

```

My problem: is there a way to use method1 in method 2?
This works as i call this directly in the method, but doesn't if its called in a function, running in a method:

```
exports.newObject = function(){
  return new Utilities();
}

var Utilities = function(){

  this.method1 = function(args, callback){
    someCallbackFunction(args, function(result){
      this.method2(args) // THIS DOES NOT WORK
    });
  }

  this.method2 = function(args, callback){
    this.method1(args) // THIS  WORKS
  }

  this.method3 = function(args, callback){
    //stuff
  }
}

```

Any advice for a novice?