Lord Krishna told Arjun "My Gyani bhakt is not greedy or over ambitious. He is contented with whatever he has or he gets. He has a powerful weapons of concentration and satisfaction.

Earlier the example of Napoleon was cited to show that strong will power and with deep concentration you can achieve your goal. As Napoleon would pay attention only on his goal and would not get disturbed by other outside factors, he could reach his goal. But the story does not end here. Another example is of greed, Ego and desire of over ambitiousness.

When Napoleon became the Chief of France, he was not satisfied with his goal. He wanted more. The desire to have more, makes you greedy. You become insensitive to others feelings and desires. You become Egoistic. You think you are the Lord of this world, nobody is powerful than you. Same happened with Napoleon. He conquered my nations. But there was no satisfaction, no enjoyment of life. he became greedy and restless. He had made a map to see what all he can capture. In the map there was place named St. Helena. He skipped that place thinking that it is not a fertile land.
But see the fate of a man that in the end he was kept in St. Helena. He got shelter in the place which he just dropped to capture.

It is written somewhere that when Napoleon lost everything and was in St. Helena, a poor village girl, carrying grass basket, came in front of him. Napoleon's assistant told the girl in anger to make place for their master, why are blocking his way. Once he was honoured so much and now nobody to respect him. He told his assistant, leave her, whatever I achieved and whatever I saw was all a
Dream.

We must learn from these examples that whatever we achieve, we should think of others also. Be contented. Don't get greedy as there is no end to our desires. It is we who have to control our desires. Desires will not say to put an end. Your will power has to capture the unwanted desires and lusts.