i smoke out of habit now, i started when i was 14 or so. I think it had to do with my dad being a big smoker too. Now i smoke between half a pack and a pack a day. Usually a cig will calm my nerves, but Im guessing my nerves were rattled because I hadnt had a cig for a awhile... sooo. It is hard to quit too, ive tried many of times. Now I just do care. I excercise everyday and I am a pretty good runner and I can pass all the Armys physical fitness test easily enough.
But ya smoking sucks I wish I wouldve never started, and it will probally take a scare for me to quit permanently.