Once you do your basic graduation, think of some good Mathematics academies in India, that offer special courses. These courses will enable you to plan your career better, and you will develop fresh insights. If you do an additional course like B.Ed, you can easily find a teacher's job, in a school, and with experience, you will do far better. When you join any school, ensure that you also enroll for the Msc Mathematics program from Annamalai University, or the University of Madras or some famous University, from where you can complete your PG degree as well. Your peer group in such environs will also enable you to gain fresh ideas and, some encouragement will take you to the next level.
However, once you join a school, if you are in a good frame of mind, do a post graduate course in Statistics from a good University, through Distance education. Please do note that some companies like ITC, employ Statistics Post Graduate Degree Holders in Managerial positions. You can also then think of doing advanced courses in Total Quality Management, Six Sigma and so on, and this will help you to open many new doors in terms of consultancy assignments. Training Managers in Six Sigma is a big business today. So, Mathematics can open many doors.