I used writing method too.
I know it's really hard. Every time i start speaking i feel scared, almost panicking, i apologize, i mumble and so on... Like "well it's not really important, but maybe i should tell you.. well...oh... you know... i know it's terrible but... well... i'm scared to tell you but... ah nevermind" and so on.
I've never told him I have a drinking problem

I just can't
so i understand