I do find it a shame that smokers are told repeatedly and relentlessly that quitting is a really hard thing to do and that they have some of the toughest days/weeks/months ahead. It makes the decision to stop smoking terrifying even before the final cigarette is stubbed out.
Isn't it right that everybody has a different experience with their quit. Any smoker wanting to quit, please look amongst some of the posts in the first couple of weeks and then month posts. You will see that people are experiencing a real mix of feelings, emotions, difficulties etc. Not all these will apply to you, some might, maybe none, but who knows unless you try.
The main thing to realise is that there is all sorts of support for all sorts of experiences. Its not a failure if you don't succeed, most of us aren't here with our first attempt. You have only failed if you decide that you are going to smoke for the rest of your life, and every attempt you make prepares you for maybe another emotion you will feel along the way.
Please do not be put off by horror stories. Try it, it might not be so bad