i am not aware which field i should choose, should i opt for further studies or job. my family condition is good, but my mind is in dilemma what to do
I am assuming you are young maybe 22-23 years old.I would suggest there are two paths:
Try doing a job and see whether you enjoy work life. I have many friends who worked for 1-2 years and then went for further studies. Sometimes, your employer may have tie-ups with educational institutions. Be on the lookout for them.
If you are unsure about pursuing PhD, try pursuing a masters in India first. That will give you an idea how the research career path in academia is actualy is. This may not work if you want to do masters abroad.
Hope this helps.