The success rate of recovery for any drug, is in my opinion no greater than the other. Most recovering persons experience 4 relapses prior to long periods of abstinence. For the addicted recovery is a life long process. It is also standard that most people who attempt to quit a particular drug of choice, do so with out formulated methods and without establishing a support mechanism. The lack of having an effective plan and a strong support mechanism are the primary reasons that lead to relapse.
Recovery begins with abstinence.
There is no internal help to do this. You are the sole facilitator of consuming any drug. Attend a support group. The best place to find out how to recover is somewhere you can be with people who have been in the same situation as you. The more you talk with recovering people, the more you can learn from them.