I've been addicted to cigarettes since I was 11
Would it be hard for you to stop smoking since you have been doing it for so long?
Yes, I've been struggling to quit for awhile now.
Smoking is a terrible habit to have. If you feel you are addicted to something you should seek ways to help you get over it. You have been doing it so long it is not going to be as easy as you think.
I feel like I can't stop, is that normal?
It is normal to find it hard to quit after smoking for a long time. Your body and brain is so used to smoking that it's part of a normal routine but it is possible to quit with help and willpower. You should try quitting with some support from your friends.