Do you easily feel tired at your work-place? If yes, what do you think causes this tiredness? Is it unsuitable working environment, or unfriendly colleagues, or excessive workload? It is generally believed that these are the basic reasons for our low work potential. But it is not true. Because if this were true, everybody with the same workload and working at the same place and with the same colleagues must feel tired; which is not the case. Then where does the problem lie?