Dear applicant it's great that you have profound interest in Psychology. To become a Psychologist in India first in your 10+2 keep psychology as one of your principle subjects. Followed by pursuing any of the degrees like:

1. B.A Psychology

2. B.Sc Psychology

3. B.A in Applied Psychology

During your Bachelor's degree try to gain some working experience on Subjects to gather deep knowledge about the subject.

Then Pursue either M.Sc in Psychology or M.A in Psychology and after that accomplish your goal by completing PhD in the subject. Then you are all set to counsel patients and make them mentally healthy.

Good luck!!