Made a decision to turn our will and our lives over to the care of God as we understood Him.
It sounds to me that you have put Step 3 into practice. Not only have you made the DECISION but are actually turning over your will and life every day.
I wouldn't be so concerned about being stuck on this step. You have worked this step quite well IMO. Have you talked about this with your sponsor? It might be an issue to spend some time going over. I know that I couldn't do my fourth and fifth steps alone, I needed help (although I didn't get it from a sponsor as much as from a good independent third ear).