Ambition is poison for love. A lover is not in any need to prove. In fact, he knows that he is loved, and that's enough.
Try to diagnose it very carefully. When you are not loved — and how can you be loved if you don't love? — when you are not loved and you don't love, suddenly a great need arises to perform, to do something, to show the world that you are important, that you are needed.
There is a great need to be needed. You feel futile, impotent, useless, if you are not needed. The need in itself is not wrong; it is a love need to be needed. If a woman loves you, you are fulfilled — somebody needs you, you are significant. Then you don't bother about the crowd. You don't go into the marketplace and shout, "I am important!" Then you are not ambitious; you don't collect money like an obsession.
If somebody loves you, in that love you are dignified, in that love you become a sovereign. Love makes you an emperor, a sovereign. Love fulfills you so deeply and so greatly; then there is no need to perform or do anything.
Ego simply does not exist with love. But if that need is unfulfilled, then you will try to fulfill it somehow: you would like to become a very famous man so many people need you.
But remember, to be loved by one and to be needed by millions is not the same. Even a single person's love, even a single glance of love is enough; and you can collect millions of people and they can all look towards you, but that will not be satisfying.
OSHO