As with any addiction you have to REALLY want to make a change.
You have to have a true epiphany. If you don't change you will die.
You won't be there for the loved ones who will be forced to go on without you.
Without that. Without the will, change is almost impossible.
Gums and Patches can't replace it.
Individual results may vary. The above statement is personal experience only. I am not a medical expert.
If you have health concerns or medical issues see a doctor before making any changes.
Go cold turkey and really force yourself to not accept cigarettes or ask your roommates for "just one smoke" when they're smoking around you. I've been there. I used to have 2 roommates and we were all smokers, one day I quit cold turkey and would just leave the room when they lit up. It also helps to re-wire your brain, when you smell their cigarette smoke think "man, that smells disgusting, that's how my clothes and breath smell". Eventually, after quitting, second-hand cigarette smoke will actually start to smell gross. It's one of those "acquired taste" things and you can un-acquire the taste with a bit of willpower.