I've spent years lying about myself. When I was a kid I had to go to therapy and I would sit there and lie. I'd say I was OK and my life was perfect and I had no reason to be in therapy, because I was fine. In reality I was dying inside and didn't want to admit I was the kind of person who needed therapy.
What if you just start with telling the truth about little things you would usually lie about and see how it goes? I'd imagine not being honest in your recovery can seriously jeopardize it.