It sounds like it is not just you that needs to talk but also your wife. You didn’t mention if she had any support or counseling when you first stopped gambling, but it would help both of you if you tackled this together. There are support groups and a forum here for family members or Gamanon.
From your OP it sounds like your lying and hiding came before your gambling – is this right? If so was there a trigger for you getting sucked back in? Can you go back into counseling to look at these things as it was so helpful last time. I wish you well.