I don't think we get open choices. We only get this or that: bad or worse. if you can only choose bad or worse, choose bad. that's good. :D

So I'd say smoke, don't cut. but I reckon counselling too. Because your problems won't go away on their own, but if you can get rid of them with hard work, then maybe one day the loading of your choices will change, and quitting smoking won't contain this cutting problem.

Substituting one behavior for another. Counseling, therapy. You can be free of behaviors that you
re enslaved to, everybody needs help/

Right now, smoking is a coping mechanism that is helping you stay alive. Yah, maybe not the most healthy or effective, but right now it's helping you not cut. Counseling might be a good start to help you manage self-harm urges so you don't have to use smoking as a way to cope with those urges. Be kind to yourself, you'll be able to give smoking up when it no longer protects you from self-harm urges.

Yes, you'll stop smoking when you are sick of it owning you & preventing you from the jobs you want, the partner you want, vacationing with friends you'd prefer, prevents you from wasting your money on another new car that will stink & get burn holes, it makes you feel like a social deviant and you're tired of feeling ashamed, I know because I wasted most of my life hiding behind my secret barrier - cigarettes. Don't give up wanting to quit, hopefully the will & the way will open up at the same time and it will Finally happen! I do not smoke any more.

I quit little more than 3 years. I have severe emphysema and have a rough life now because I can not breathe well. I cannot do anything without getting short of breath, so it is important to quit, for your health

It will get everybody in the end, sooner or later, but if cutting is the bigger danger right now then deal with that first. Its not really about cutting or smoking, its about the drive to choose those behaviors. We don't have to undergo psycho analysis to change our behaviors, though. I'd say its more about recognizing that these crutch behaviors aren't giving us what we really want, and are creating more problems we don't want.

Drinking and smoking, drinking makes us lose control/inhibitions, so we are unable to do the things we wanted to do, and instead do the things we said we wouldn't do. I would drop the drinking first.