As a college student, how to treat career planning and what kind of mentality should be used to deal with enterprise recruitment?

This problem is relatively macro. To put it simply, the career planning of college students is faced with what kind of work you want to do, whether your major needs to be matched, or whether you choose a cross-major according to your interests; On the other hand, the choice of industry is related to your welfare, future career development direction, and whether there is a perfect training mechanism and position promotion mechanism.