It is necessary for you to quit smoking.
As we know,smoking is harmful to our health.It contains nicotine and other chemicals which makes people sick. Also,too much smoking may cause lung cancer.
On the other hand,the smell on the smokers is terrible and I really hate it.What's more,the cigarette smoke is bad for the health of non-smokers when you are smoking.
I know sometimes you feel stressful and you just want to relax yourself by smoking.But I think it is better for you to do some relaxation exercise or read some books or do something you like instead of smoking. I belive you will succeed at last and I do hope you can quit smoking.
I'm looking forward to your reply.
Love from +你的名字