Yes - You can do it. Hang in there.
Find something enjoyable to do when you get a craving.
Remind yourself what you [u]actually[/u] got out of smoking, and question every thought that it did something FOR you.
Develop new habits that reinforce your being able to do what you set out to do.
Remember how utterly shitty you felt when you were smoking and got a bad throat, bronchitis, or even step throat?
Also find some new hobby or other rewarding activity.
Last year in the news there was word that people who take up exercise have better success at quitting. See a Dr. first.
Believe it or not, playing the harmonica (well, "blues harp") in helped me back in the 60's.
Don't buy the damn things. If you do, try leaving them on the dashboard of the car in the sun for about a week.