I've completed step 5 before. I think it is a lifetime thing, I'll need to do another at some point in the future. After taking an inventory of my behaviors and fears and resentments that I am aware of in my thoughts, I analyze the results. Then, based on my analysis, I conlude what is at the root of all those behaviors, fears and resentments, that chains me to my addiction. I admit to another human what the root cause is, and that I am to blame and it is my responsablity for correcting it. Most people do this with a sponsor, I do it in therapy, mostly. My root cause was I allowed the past to affect me too much in the present. I have addressed this problem and I am making progress in correcting it.