I just want to say, KUDOS to any and all that at least try to quit or think about it. I do realize how hard it must be.
I'm very glad I've never gotten into it because I see people struggle with it, I've seen them get killed by it. I've seen them keep smoking while it was actively killing them.
Terrible thing.
So to anyone that wants to quit, tries to quit, no matter how many times they've tried and failed and try again. KUDOS ! Don't give up.