It depends on what kind of person you are and how your body works.
I used to drink and smoke a bit but I quit a many years back.
For some reason I never had any bad withdrawals.
Some people do and some people don't.
I had worse withdrawals from trying to stop using energy drinks.......never quit immediately.
So maybe you could try weening off of alcohol slowly by cutting the amount you use.
I did have a few urges when I first tried stopping but if I distracted myself with work or some hobby I usually forgot until it was the end of the day and I was too tired to care.