Allah (subhanahu wa ta'ala) said: If you never felt pain or experienced problems, how would you know I'm the Healer?; If you never made a mistake, how would you know I'm the Forgiver?; If you were never hurt, how would you know I am the Comforter? If your life was perfect, then why would you need Me?

- [This is not a Hadith just a quote from someone]