I use snuff personally. I've never felt the nicotine from a cigarette and always hated how they make your mouth taste, so I've never been tempted, even when I kept tobacco, papers and filters on hand. When I run out I often can't be arsed to get a new can for a few days or weeks.

I'm on proper ADHD meds these days, which beats any self medication. Still nice to have a lil extra.