Where do I start to quit smoking?

Of course, this might seem like a silly question but, I'm kind of in a mess. I've been smoking for 10 years (since I was 16), and I can say I smoke alot. I'm not gonna go out and blame my job or anything, but I think it plays a big role. Look, well, I'm a fisherman and they guys I'm with bring carts and carts of cigs. Its just kinda what we do... and a year ago my dad died from smoking and I just really need to stop. >.< UGH. My whole family smokes, and my girlfriend quit a few months ago. So, yeah, where do I start? :P Can you do it without those meds? Just by plain will? Any help will help. :)