Step 3 is a decision. The turning over of your will and life is a life-long process. Step 3 is a decision to do what it takes to make that happen. Basically a decision to work steps 4-12.
Willingness is the key. You don't have to be comfortable with it. Just willing. Do you believe or are you willing to believe that your life would be better off if God was in control? Are you willing to stop playing God? Then its time to move on in my opinion. A lot of people get hung up on step 3 trying to fully understand God, but our limited understanding is sufficient as long as willingness is there. It doesn't have to be complicated. You can do it!