What do i need, shall i or not?

Consult ur parents first; if they are not knowledgeable about this (as I also am), consult ur professors in the school/college. but ur aptitude for the subject and ur determination to succeed, both are more important than anything else. At this stage, forget about the salary; it is too early to think of it. You should first establish ur self in the line, then try to progress with ur knowledge and experience. Good Luck to you.