I feel a bit lucky. The first time I quit was when I signed up for the military, it was mandatory. Something my recruiter (who smoked) failed to mention to me. I found out literally the night before I left for the meps station and I made myself sick, smoked around 4 to 4.5 packs that night. I mean just chain smoked the hell out of them lighting the next one off the butt of the one I was putting out. A lot of us were smokers and needless to say we were in a foul mood because of going without. The blessing there was well, it was basic training and the ultimate stress relief as well as no means to break down and buy any for several months. Stupidly I started smoking again.
After 20 some years of heavy smoking, mostly pack a day then upwards of 2 packs a day my health determined I had to quit. Over the course of the last few years I smoked I had a nasty cough, constant sinus issues etc. I figured after all that time smoking 'just fine' it couldn't be the cigs. I was determined to smoke until the day I died. I saw doctors who suggested it was 'just allergies' and I tried every otc allergy pill and meds there were. Didn't help. My 'smokers cough' turned into a chronic cough and my throat was so sore I had difficulty functioning. Walk to the end of the driveway, start coughing. Laugh, start coughing. Had issues carrying on any lengthy conversation without coughing.
The coughing fits were bad, I pulled my back muscles a few times from the force of coughing and I was starting to suffer something I think called 'cough syncope'. I'd be sitting in a chair at the computer or on the couch watching tv in the evenings and cough so hard I couldn't stop long enough to catch my breath. It would fade to a wheezing and then the room would spin and I'd feel myself begin to pass out. Several times when I passed out and came back to again I found myself slumped over and my arm jerking like a small seizure. It was uncomfortable being around anyone and I certainly didn't want to deal with those symptoms while dating or anything. The smell of smoke on my clothes was the least of my concerns. No kidding, I seriously worried it was going to kill me.
I was prepared to just quit cold, my body physically couldn't tolerate smoking any longer. I'd tried vaping a couple times using an ecig (cigalike) sold in gas stations and compared to smoking thought they sucked. I decided to give them a shot, figuring what have I got to lose since obviously I can't smoke anyway. Vape pens (ego style) ended up working well, much better than cigalikes. I finally graduated to regulated mods and rta's when the ego pens weren't holding up. Was tired of burnt expensive factory coils, cracked tanks, cracked top caps/drip tips.
When I say I feel lucky, I wasn't just trying to quit smoking out of the blue or as part of a new years resolution. Health put me between a rock and a hard place and I really had no other option. If it'd been 8 or 10yrs into smoking when I still felt fine I'm sure I'd have fought it a lot harder. I don't envy those folks but I also don't wish anyone to feel as shitty as I did when I gave it up. Not to mention all the other embarrassing things like constantly spitting because of phlegm in the throat, wheezing and coughing when you're intimate with someone. Not sexy at all. Unable to watch a comedy in a movie theater for fear of laughing and going into an uncontrollable coughing fit in a crowded place. Sucked.
Around 1-2 weeks into vaping, maybe 3 tops for all those things to go away. No more spitting all the time, no more constantly irritated sinuses, sense of smell returned, able to hold a conversation or laugh without sounding like a damn tear gas victim. No more sore throat. No more sore abdomen muscles like someone got done using me as a punching bag. As a bonus my mom decided to quit along with me after over 40yrs of smoking and she doesn't cough like she used to either. So a little older and a little wiser maybe, having to learn the hard way and not sure why I picked the damn things up in the first place. This coming from someone who truly enjoyed smoking. I don't shame others who still smoke, it doesn't make sick to be around them but it definitely doesn't smell pleasant. I'm also not tempted to bum one off them, the desire's gone. Some have told me I've traded one habit for another so I haven't truly 'quit' but I feel a helluva lot better and even if it's not perfect it's a crapload better than the harm smoking did to me.
Anyone can quit if and when they're ready. Enough motivation and just about anything is possible, even if it takes some longer than others.