channel that anger toward "Slick" - your addiction - not yourself.
Otherwise, he'll use it against you eventually, convincing you "screw it... you suck anyway. May as well drink".
Remind yourself that it's not actually YOU. YOU are that person inside who is able to observe these honest truths about where you are and have been and voice a desire to change.
HONOR YOU... CONGRATULATE YOU..... and let Slick go pout in the corner because YOU know there is a better way, a more joyous life, a more self-honoring path and a far more rewarding journey.