I haven't lit a smoke in 8 years, and, honestly, if you're already thinking you goofed up, you'd probably be best served - in the long run - by lighting up again, and doing it right. Better to do it right for good than be one of those flip-floppers that quits every other year.
The key is picking a day and sticking to it, I think. It's a mind-over-matter thing, and if you're not totally in to the idea of quitting - maybe it was an impulsive decision - chances are you'll slip back at some point in the future.
In my experience, you gotta be _resolved_ to quit in order to make it happen.
So pick a day (2 weeks, or so, out).. maybe taper off your smoking a bit beforehand, to lessen the impact (it's still gonna suck, and not much less than it is for you now - but maybe you'll be more prepared)... maybe use an aid (I used "The Patch" myself... it helped considerably, I think... as it got me used to not smoking before my body had to deal with the real withdrawal)..
Bad news with that is all the anxiety and shit you've gone through for the last 22 hours were, in effect, a waste.... except maybe to prep you mentally for what's to come.
So, maybe go back to smoking, and quit more effectively...
Otherwise, simply stop being a puss, and just don't smoke. It's all in your head, the physical withdrawal's done with after 72 hours... after that, it's nearly all psychological... which still can be rough... but, generally, easier.
When you haven't smoked for as many months as years that you did smoke, you've genuinely achieved something.
Until then, it's a day-by-day thing.
