Just you need to focus on yourself. Don't think about smoking just divert your mind from addiction.
And how can you do it.right some ways you can try-
You can do meditation
You can do some productive work
You can watch youtube videos or tv shows.
You can spend your time with your loved ones like your family members.
You can take Vit-C souces fruits which helps in your Immunity as well as decreases your chances for Addiction.
You can watch motivational videos on youtube.
You can Chant Hare Krishna and give your mind in wisdom to krishna and you will feel so light and comfortable.
You can help poor peoples by providing food as due to 21days lockdown and well it helps alot.
You can invent new ideas as everyone thinks its a pendemic 21days lockdown but you can think it as an opportunity so that you can invent new ideas, new techniques as well.
Lastly Always be positive and rest think about your future.Get a quit place and rethink about yout future as a Long Term basis and imagine positive thoughts, your success, your good health, wealth, time freedom and as well as security.
Thats all you can do to get rid of this ADDICTION.