First, gradually reduce the number of smoking and quit smoking through attention transfer.
First of all, when you start to quit smoking, you must never smoke. We should gradually reduce the frequency of smoking, take your time and don't worry. So, in this process, if you can't control yourself. Then, you can divert your attention. For example, you can do exercise when you want to smoke, or do whatever you want, and have a big meal casually. As long as you divert your attention, you will forget to smoke. Also, when I want to smoke, I can control myself by chewing gum, or I can drink strong tea. Drinking strong tea can help you quit smoking, because drinking strong tea will make your mouth forget the smell of cigarettes. So, I will give up smoking slowly. Also, snacks to quit smoking is also a good choice. In this process, you can prepare more snacks you like. Because smoking addiction is easy to occur in leisure, as long as you don't let yourself be too idle and your mouth keeps working, you won't want to smoke.
Second, let go of yourself and learn to encourage yourself.
Then, let yourself completely empty, don't always think about smoking. Also, you can choose e-cigarettes instead of cigarettes. E-cigarettes have a strong fruit smell, which can make you forget the smell of cigarettes. And e-cigarettes are not addictive. Also, you can cultivate more hobbies in your spare time. In this way, you can make full use of your free time and forget to smoke. Also, since you have chosen to quit smoking, no matter how difficult the process is, you should learn to encourage yourself and stick to it. You can take incentive measures, such as successfully not smoking within a week, then you can buy a pair of shoes you like, which can motivate yourself to stick to it. The above is just my personal opinion.