Judochop and beware are correct. Quitting smoking is both a battle against chemical addiction (yes, that means you are a drug addict) and behavioral modification. You will most likely not quit until you are really, really, ready.
There is an excellent book for people who are not sure if they are ready to quit. It actually encourages you to smoke WHILE you read the text. It is Allen Carr’s famous “Easy Way to Stop Smoking”. Despite it’s deceptively simple title, the book worked for me and millions of others.
After the initial chemical addiction is broken in about a month, the rest of getting off cigarettes is learning how to live life as a non-smoker. That requires behavioral modification and means you have to approach life in different ways than you did before. In the lingua franca of addiction assistance, you may have to change your “playgrounds and playmates” as well as constantly remind yourself that smoking is a drug addiction.
That book is a good start. Pick up a paperback copy for a few dollars and see if Allen’s approach is for you. Best of luck!