Success- What is your definition?

Today, two former students of my department who had passed out in 2007 came to conduct a guest lecture as is the tradition in our dept. One was working with a large advertising agency while the other was with a News channel. Both were earning good money- A sign of success in this materialistic world.
But they said something that brought the dreamy eyes, enthusiastic students face to face with reality.
"You are living, We are not", said the one working in the advertising agency.
"Dreams die the moment you leave the campus" agreed the other one.
The students were shocked for a moment. These men had reputed names for employers, owned fancy mobiles and had lots of money- what else would anyone really want?
I admit, I too was taken aback by their brutal honesty. It was not what the guest lecturers normally told us. But I could understand those poor souls, I could identify with them. Having completed my MBA degree and having had a taste of the "real world" before joining this Journalism course, I knew what they were talking about- the loss of their very being in pursuit of so-called success.
For as long as we are students, we have a very idealistic view about life. We believe (at least those like me do) that the road to success is through hard work, sincerity, honesty & integrity. This would be true only in a perfectly ideal society, which unfortunately, the real world is not. The corporate world is a cruel place- You need to lose your character if you want to make it big in a short time. Individuality,freedom of thoughts, morals and ethics don't matter here. What matters is your willingness to compromise- The more your willingness, the greater will be your chances to "succeed".
But one needs to keep in mind that one may get money, materials, fame & power in return for his soul, but someone who sells his soul can never be at peace. A man whose conscience is not clear can never connect with his soul- and he can never find true happiness, which is not materialistic, but spiritual in nature. The real world would test your character and tempt you with its vices but ultimately a human being has got to choose for himself the path which would ultimately lead him to his fate.