Should an student aspire go for course which is in demand or he?

A student should consider both the demand for a course and their own interests and aptitudes when choosing a course of study. A high-demand field doesn't guarantee success or happiness if the student isn't passionate about the subject matter. Conversely, a passion project with low demand might lead to difficulty finding employment. The ideal situation is finding a balance – a field that interests the student and has reasonable job prospects.