A very powerful story- must read..
He remembered his grandmother's warning about praying on time: "My son, you shouldn't leave prayer to this late time". His grandmother's age was 70 but whenever she heard the Adhan, she got up like an arrow and performed Salah. He, however could never win over his ego to get up and pray. Whatever he did, his Salah was always the last to be offered and he prayed it quickly to get it in on time.
Thinking of this, he got up and realized that there were only 15 minutes left before Salat-ul Isha. He quickly made Wudhu and performed Salat-ul Maghrib.

