Totally understand and the trick to getting through it truly is taking things one day at a time.
Everyday is a chance to get better and to be a better person. Always try to better yourself and surround yourself around positive people that bring tye best out of you.
Go for walks, play sports, reading books or anything that occupies your time is the best way to beat this nasty habit.
The temptation will always be there but if we are able to take the right steps there should be no reason why you cannot recover.
Good luck to all and wishing you all the best for the new year.