I quit smoking 28 days ago after 12 years of Marlboro Reds. Nobody tells you about the productivity crash.
Week 1: I stared at my screen rereading the same email three times. Code reviews that took 15 minutes took 45. I kept getting up from my desk for no reason — muscle memory looking for a smoke break that didn't exist anymore.
Week 2: The fog started lifting but my focus was still garbage. The "just one won't hurt" voice got sneakier — disguised as "you deserve a break" instead of "you need nicotine."
Week 3: Things clicked. My 3pm energy crash (which I always blamed on lunch) disappeared. I replaced the smoke break with a 5-minute walk. Turns out stepping away from your desk for fresh air works just as well without the cigarette.
Week 4: Running pace improved by almost a minute per mile. Cravings are brief now — 10 seconds and gone. I track them in a counter (80+ survived) and seeing that number climb is weirdly motivating.
The counterintuitive part: quitting didn't make me better at my job. It made me worse first, then better. The transition cost is real and nobody talks about it because "quitting is good for you" doesn't leave room for "quitting temporarily nuked my output."
If you're in the first two weeks and wondering why you can't focus — it's not you, it's the withdrawal. It comes back.
Has anyone else gone through a productivity dip after a major habit change? How long did it take to bounce back?
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