that's good...for me, similarly, the first day was a bit easier. i was so upset over finding out my grandmother had lung cancer, that it almost did not register with me that i had quit.
i went to bed early, and when i woke up the next morning, i understood how a heroin addict in withdrawl feels.
interestingly, as the nicotine starts to leave your system slowly overtime, your body is literally screaming at you to give it more...which of course adds to the stress of the mental craving.
the physical part is the most brutal and once you get through the first week, and your nicotine levels start going lower, the edge comes off more and more, though it will take a long time before you are physically over it.
I would like to tell you that i don't get cravings, 8 and a half years later, but i still do, though they are not the physical kind...they are more like the desire to have one at a party, to just be part of the social aspect of smoking you used to be part of.
since some people love to smoke, like i did, in terms of the enjoyment of it, but not the effects, the love never fully goes away, but fortunately, the impulse and the cravings do, so when the desire to do so comes, it is mostly a wistful memory of good times when you smoked...it is sort of a mirage in a way.
anyway, as i said, the tricks were sort of my own personal development over time, and worked really well for me, and i definitely was a two pack a day addict, first thing in the morning, last thing at night, smoke while shaving, driving, everything smoker.
my friends always could have only 1 or 2 during the day, then nothing else, then social smoke at night...and that worked for them for years...but now, they are full on, while i have quit...so it is strange.
as said, it can be utterly brutal, but once the physical urge dissipates, it becomes you against your brain, which makes it easier since you are no longer fighting your body, (though fighting your mind can be hard too)
i also felt repeating a mantra helped a bit too when i wanted to smoke...i would simply say to myself "I am not a smoker" or "I don't smoke" a few times. it really is simply an affirmation, but i felt it buttressed the mental aspect.