The Noble Messenger of Allah, _Sallallahu alaihi Wasallam, said:
"HE IS SUCCESSFUL WHO HAS ACCEPTED ISLAM, WHO HAS BEEN PROVIDED WITH SUFFICIENT FOR
HIS WANTS AND BEEN MADE CONTENTED BY ALLAH WITH WHAT HE HAS GIVEN HIM." [Sahih Muslim].
These days when people say so and so is very successful, what they mean is that he/she is making a lot of money. With this Hadith, however, we understand who qualifies to be called successful. It is not having car x, house in y and a job z but: ISLAM, FULFILLED NEEDS and POSSESSION OF A THANKFUL HEART.