Best Way to Quit Smoking?

I am 22 years old and I started smoking whenever I was 18 and a little wilder, I am trying to clean up my image and one of my nasty habits is smoking. I have tried countless remedies(patches, gum..etc.) except prescriptions because I do not have insurance and they are really expensive! Are there any places you can go and be experimented on or how else can I quit! Its really bad but the habit is just lingering! I hope someone can help me!:)