I am studying my Masters in Mathematics from IIT Bombay. My class is almost full of students studying math because they have done their bachelors’ degree in maths. (That may be possibly since they didn’t see other lucrative option then; but lets not get into that) Most of them do not have a liking in the subject. 

Come on guys! You ought to stop this somewhere…Would you do your doctorate in maths, now that you have done your masters…? Till when will you let your past decide your future?

Your past decides your present. But it doesnt decide your future! In fact, your present decides your future¹. So friends, its time to decide what you like. Lucky are those who know what they want and get to do it. All I can advice is “Get lucky.”
¹ Sounds nice funda naa…