What are the simple and effective ways to quit smoking?

I am a chain smoker.
I am sick and tired of wasting my money on cigarettes.
I am also very much aware of horrible consequences. I know it causes oral cancer, it takes away 15 years of my life, causes bronchitis, sexual impotence, and strokes.

BUT I wish I know a way to break my habit to quit smoking effectively.
What methods really worked for you?

I would appreciate it comes from both smokers and non smokers!