I wont lie to you – first few weeks will be hard, but you need a motivation to change – your health is a good one. Once you go beyond a few weeks the benefit in your health and mental wellbeing will take over and should see you thro.
I fell off the wagon twice in 2 years. First time i ended up in hospital (briefly) but second time i could tell the effect on my health incl my mental health and stopped for what i think will be for good now.
Will your family support you re stopping as that is key?