Step 4 looks scary but feels great. Unless you do it, you will never know. You've no doubt heard that it's a "program of action" .... well it's action time.
Up till now you've admitted something, come to believe in something and made a decision. No real action yet.
Step 4 is following through with Step 3, it's how you clean out all the muck to make room for God. If you want God to move in, you gotta kick the old tenants out first.