Dear mumbaikars, what's the biggest regret of your college life?

In my case, 1.never took studies seriously. 2.fcked up my CGPA. 3.ghosted every girl that ever talked to me in that way(relationship).BC Jo achi ladki mile usse chipak jao warna akele rhe jaoge. 4.always have 2 plans : in my case I was doing CS and I had attitude to always look down at my BCOM degree. And at this point I'm not doing in good in any way. 5.being quite hesitant and ignorant to participate in any extracurricular activity.