Need Help Not Loading Language File

[eluser]razerone[/eluser]
Hello

I am trying to set up my language files been reading through user guide but not working.

Controller.php

Code:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Header extends CI_Controller {

public function __construct() {
        parent::__construct();
        $this->load->helper('url');
        $this->load->helper('form');
        $this->load->helper('language');
        $this->lang->load('language');
    }

function index() {
        $this->lang->load('header', 'en');
        //$this->data['text_title'] = $this->language->get('text_title');

  $this->load->view('header', $data);

}

}

Language header.php

Code:

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

$lang['text_title'] = 'Your Title';

?>

view header.php

Code:

<title><?php echo lang('text_title'); ?></title>