smoking sucks

my SO and I have been TTC for a couple months. I am a smoker and he is not, he's hated it since forever and I am one of those smokers that loves everything about it. but....randomly i woke up this morning and just needed to be done. I've tried quitting before and failed miserably. however, I was never fully committed to the process. I handed the remainder of my pack to my SO and told him, "this is it. I'm not gonna finish the pack, I'm not gonna start tomorrow. I know I'm ready to do this." I pretty much. had to pick his jaw up off the floor... I decided not to go with an aid, because when I have, it just gave me room for excuses to smoke. I need to just be done, cold turkey. I feel confident but also nervous. has anyone else ever felt this way?