remove_action for a function within a class

Hi! PHP OOP newbie here. I have a class like so:

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class example {

	public function __construct() {
		add_action( 'woocommerce_before_my_account', array(&$this, 'my_account') );
		...
	}

	function my_account() {
		...
	}

}

I want to reposition the output of my_account() by hooking it to the woocommerce_after_my_account hook. Usually I would do this by simply

remove_action( 'woocommerce_before_my_account', 'old_function' );
add_action( 'woocommerce_after_my_account', 'new_function' );

But in this case I’m stuck because the function is within the class. Any help appreciated please!