I had hit rock-bottom (for myself), had partied hard for a whole weekend, came back late the Sunday, and realised it had to stop. So it was the first time I had really promised myself and my wife and truly meant it!
That was the hardest part... I tried to stay fir and so on, and mostly succeeded. What I thought I could do was maintain my old friendship circles, that was a big mistake. I think spending time with them was eroding at my conviction, unbeknownst to me at the time, it was a subtle process... Then I just cracked...