Need advice about metabolism and quitting smoking

When I quit smoking, my weight went out of control even though my calories were reduced as I stopped eating out to avoid cigarette smoke and stopped drinking wine. I read that there were a couple of reasons for this: (1) your body burns about 10% more calories just fighting the damage cigarette smoking causes, and (2) no longer is your meal signified by the lighting up of a cigarette; so you tend to keep eating. After eleven years of ups and downs with my weight, mostly downs (or would that be ups?) I have accepted that I am going to have to exercise hard and watch my caloric intake, something I never had to do the entire 35 years that I smoked.

I guess everyone is different.