How dismiss a viewController with storyboard from a push segue?

I don't know why dismissViewControllerAnimated:completion:. I just want to do it.

I start with a

[self performSegueWithIdentifier:@"my_segue" sender:self];

But is I call the dismiss than nothing happens. I can create another segue, but it create a new view controller.

My question is: How dismiss the performSegueWithIdentifier:sender:?