Yuddhistra's Gambling - The Importance of Self Control.
Gambling can ruin you and your family. This is a timeless lesson from the game of dice because gambling has existed since the beginning of human civilisation and is very relevant today. Yuddhistra could not control himself in the game of dice and lost his kingdom and more importantly his family. His wife Draupadi had to pray to Krishna and Krishna had to save her from being disrobed.
Arjuna and the Toy Bird - The Importance of Concentration.
Guru Drona places a toy bird on the branch of a tree and asks his students what they see when each of them take aim at the bird. While the others describe the bird and its surroundings, Arjuna says “I only see the eye of the bird”. This teaches us the need for concentration and mental clarity in performing a task.
Duryodhana's Defeat - The Dangers of Ego, Anger and Jealousy.
These are the qualities that Duryodhana had which eventually resulted in his death at the hands of Bhima. Krishna only asked for 5 villages for the Pandavas but Duryodhana even refused this.