Nick, you've made your first fatal mistake already!!!
'yeah, trying it again'
you are either giving it up or your not ... saying you are 'trying' is setting yourself up for failure & giving you an excuse before you even begin!!
what if you went to the doctor tomorrow and he told you every drink you have from now on will take a day off your life & 1 less day to spend with your kids? would you try to give up, or just ... give up without thinking?!
I gave up many things without thinking about it, not even sure how I did it, I just did & I kept off them because I feel better for it ... but with cigarettes I keep saying 'i want to quit smoking 1 day' and still, in my mind, I'm a smoker and I don't really want to quit yet ... and smoking is probably the worst thing for health overall, and yet I still light up 5 - 10 times per day ... because I just want to!
If its any help, when you are not drinking your real personality comes through & your personal strengths etc - last time you stopped drinking I remember thinking several times 'fuck he's brilliant when his mind is clear' ...
Good luck