Yes, actually.........I wish I never started, but quitting is very very hard to impossible for me. Especially given the constant pressure/stresses of medical school.
You're in medical school, so you should know a plausible solution to your problem would be to gradually take less smoke breaks over time.
I haven't looked into the optimum solution, but I would imagine a logical schedule would be something like:
week 1-2, smoke 1 less cigarette than usual
week 3-4, smoke 2 less than usual
month 2: smoke 3 less than usual
Something like that. If you can't slowly wean off of an addiction (even one as tedious as nicotine), then you aren't doing it right. Your body will have a tremendously difficult time stopping cold turkey, cutting down half the cigs right away, etc.
However, weaning very slowly should suffice. If you can't handle one less smoke break a day, then you're doing something wrong.
Disclaimer: I'm a med student, not a physician, but this solution seems reasonable to me.