Firstly each individual needs to define what they see as being successful. A success does not always refer to money or ones career; you will find many people relating success to good health, religion, relationships and feelings of Self-fulfillment.
Yes, I consider all the above but truly define success as doing a job well done and getting the recognition from a higher authority while doing that particular job in a balanced manner to not neglect any one of the other pillars of life.
I believe a successful person is one who enjoy getting up in the mornings and still be thankful for everything they have, given to them through the grace of God. One who confidently walks the life path provided and making the best of each opportunity that comes their way.
It takes courage, strength and commitment to take on each challenge life throughs at us. Knowing each step is a risk we take to failure and no matter how tough the road gets, a successful person is the one who still gets out on top at the end.