Next day, he went to the boss with his resignation letter. Boss asked him the reason for leaving the job. Then John tells him that he and Sam join the company together, worked with the same intension but Sam got the promotion and he didn't. Boss listen to him very attentively and want John to understand the difference.
Boss tells John that he will promote John at a better position if he does a task for him. John agrees. Boss ordered him to go to the market and check that if someone is selling mangoes there. John goes to the market, comes back and tells the boss, "yes, one man is selling mangoes." Now Boss asked him about the cost. John again goes to the market, comes back and tells the boss that it costs Rs. 50 per Kg.
Now Boss calls Sam and give him the same task. Sam goes to the market, comes back and tels the boss that one man is selling the mangoes at the cost of Rs. 50 per Kg. But if we take 10 kg, then he will give at Rs 40 per Kg. Sam further tells to the Boss that if we take more, then we can convince him to reduce the cost a little more.
John was listening to Sam carefully and feels surprized. Now he understood the difference between his working & Sam's working and he decided not to resign from his job and will learn a lot from Sam.
Moral :
If you want to succeed in life, then hard work is not sufficient, one has to do smart work.