In game theory and economic theory, zero-sum describes a situation in which one person’s gain is exactly balanced by another person’s loss. In games like chess, one person wins and the other loses. The win (+1) added to the loss (-1) equals zero.
At times our progress in business may feel like a zero-sum game. With the right leadership, however, success is a positive-sum game. Most successful people freely admit they achieved their success with the help of others.