One of the things that has given me encouragement is sobriety time success posts from other folks who did not succeed the first time. I really like seeing a 90 day post or a one year post. Then I look at their SR forum join date and see that they first showed up two or three or four years ago. Based on what I have seen it takes a lot of us multiple tries to finally succeed.
So in my view the key to success is to not quit trying to quit.
Humm… that seems like a poorly written sentence doesn't it? Anyway I hope this helps.