Securing good marks in class 12th certainly helps when it comes to securing admission at top tier institutions for pursuing undergraduate courses. But once you graduate and start working, people will evaluate you on the basis of your grades only for the first 3 years and that is the average time spent by millennials in their first job. So, what really matters more than marks in the long run is being able to keep with changing times and being flexible in your approach. A career counsellor can guide you during this transition phase and also help you to understand yourself better.
So, regardless of your marks/grades, a Career Counsellor will help you and guide you to become the best version of yourself!