I am so sad for you, not a reason to do it, nothing horrible happened. Yet you did it. You smoked a cigarette that someone else threw on the ground. Does that sound like an addictt, yes. Does that sound like a person you want to be? NO!
If you thought that was an OK option will you next be eating out of a dumpster, stealing a car, knocking down an old lady for her purse?
NO!, you would not do those things, so why would you do that? Why would you decide on a whim that you are not valuable? Why was it okay to put your health and life at risk again? You need to sit down with yourself and half a long hard talk with yourself about how that really happened.
I am 8 months out and I still have daily talks with myself about why I am doing this. I accept the fact that I want to smoke and I would if there were not the fact I know for sure (cat scan showed beginning of emphysema) that I would be making myself sick. I don't know a lot about you, how long you have smoked, how old you are etc. What I do know there are real consequences for smoking.
I am sorry for what you might think as a harsh response. It is not, I am just trying to give you a wake up call. You know you can do this, you just have to get your mind right. Love yourself!