I had a similar experience to yours. That was four years ago. I didn't fire my sponsor, but I also continued reading other material about addiction and recovery. She ultimately told me I wasn't doing enough and I promptly relapsed. A lot more in there. I've found that there are people who will help you through the program but not try to control you and there are people who insist that since you walked into the rooms of AA you must need someone to direct every aspect of your life because you clearly, as an alcoholic, must not have any clue. Stick to people who will show you the 12 steps and not give you any of that dogmatic stuff that says that you should stop listening to yourself.
If the workbook helps you, keep using it!
And btw, I wish I had someone like Sugarbear's 1st sponsor! I've always ended up with sponsors who wanted me to spend weeks or even months on step one and all that's ever accomplished is a deeper sense of self-hatred.