Because at the end, you and Allah, finished. Everything is going to go, everything is temporary. It's all desires of the heart, not even the heart. Not what I mean the heart. So these desires are just air, illusion.
Air is ruhs, seyrani.
You have to connect yourself to the truth, to the solid truth, and then follow that, and you will never get heartbroken. When you're with Allah, no problem. When you get your heart broken, then you're with you. When you get frustrated, because you want to control, then you get frustrated. If you don't want to control anything, you don't get frustrated.