This dunya is like a shadow. If you try to catch it, you will never be able to do so. If you turn your back towards it, it has no choice but to follow you.
I really like that one, alhamdulillah. Ibn ul Qayyim was a genius subhan Allaah, he even got locked up a few times in his life with his teacher Ibn Taymiyya. And he's the one who made the poem of The Meeting with Allaah.
Not only a good quote but a true one; right on the point. Even if you achieve everything possible in this world you still wont be pleased. (unless if you're a very good Muslim and done everything according to Islam).