Struggle is any work or task that one is engaged in, which involves great deal of labour, sweat and toil. All great people have to face some sort of struggle on their way to success. Struggles only teach us to be tough and face all adversities bravely. According to Darwin’s theory of survival, there is a constant struggle among the entire mankind in which contest forcibly and only the fittest or the best survive. According to Abraham Lincoln, “The probability that we may fail in the struggle ought not to deter us from the support of a cause we believe to be just.” A struggle is a forced and hard endeavour to accomplish or realise any goal. According to Martin Luther King, “Human progress is neither automatic nor inevitable... Every step toward the goal of justice requires sacrifice, suffering, and struggle; the tireless exertions and passionate concern of dedicated individuals.”