Career

If you are interested in lecturer field, first you can write and quality in NET examination. NET exam in conducted by UGC University Grant Commission twice in a year.
Eligibility criteria for NET:
1. Educational qualification:
You must have a degree in post-graduation from any recognized university with 55% marks exemption for SC/ ST/ OBC candidates as per norms.
2. Nationality:
You should be a citizen of India.
3. Age eligibility:
As per UGC norms, there are no maximum age eligibility for NET exam.

To become a psychiatrist, you should have a Bachelor's degree from an accredited institution. In preparation for medical school, a good choice would be to focus on pre-med, physical sciences or psychology or a combination of the three by utilizing a double major or minor.
Medical school admissions are very competitive, so high grades and an impressive list of courses during the undergraduate study are essential. Students should also plan ahead for the next step in their journey by taking advantage of any prep classes offered for the MCAT.

Mostly, people go for CA because it's widely accepted in jobs. CFA is considered quite difficult and most people drop it after level 2.

Travelling indeed is an adventure on its own. Such careers not only offer lucrative packages and experiences, but also keeps you away from the monotony of a desk job.
You can check the below mentioned link:
https://www.shiksha.com/7-jobs-that-pay-you-to-travel-across-the-world-article-4224-1

HR is a dynamic field. There is a good opportunity for growth. In XIMB, you have an option of studying electives/subjects of different fields of MBA. So as an HR, you can also study Marketing/Finance/Operations. This will help in future when you want to switch disciplines or develop further in organizational hierarchy.

Yes, you can do that.

You need to concentrate on physics and chemistry too.