Great achievements highlight the important of setting a goal as basic requirement to gain success in any effort. An endeavour without goal would be like groping in darkness.
Lack of goal or definite purpose, as Napoleon Hill said, is a stumbling block for many people where an effort, cannot lead them anywhere. Goal create the future in advance. Goals may be simple such as the necessity to meet the day to day demand like paying bills, attending the immediate needs of the family, etc.
Some goals may be big. For example, a man of science, bent on innovation, will have to plan the kind of research, experiments etc to be done before he formulates a theory. So also students who wish to achieve big.
You should set a goal, aim high, plan out the time available, chalk out a work schedule to prepare for your examinations. You need to be determined and dedicated to perservere till the end.
You should Dream Big, Think Big and Achieve Big.
As Swami Vivekananda said, “Arise, Awake, Stop not until you reach the goal”