Much like faith without works is dead, determination without works is dead. That's why we call the first step to recovery: powerlessness. We realize that determination wanes as time (and inevitable temptation) increases. I have seen countless motivated, determined, confident, "I will never ever use again" alcohollcs and addicts relapse because they never did the necessary work such as meetings, readings, helping others, cognitive restructuring, making amends, eliminating self will run riot, etc., etc., etc.
So, do the footwork Mr. Determined or fall by the tragic wayside like so many before you. It starts by getting a Sponsor. If the Sponsor doesn't make you work, get another Sponsor.