I am one of those chronic relapsers. But I refuse to give up hope that I can quit for good. And it's the good people here on SR who have contributed greatly to that hope. If you find it frustrating, can you imagine how it feels to the one who is binge drinking once a week, week after week? Frustrating doesn't cover it. It's hard, it's horrible and it makes you feel crap about yourself.
A bit of compassion goes a long way.