Welcome to the posting side of things Parablue. I'm glad you are seeking help here and that you've reached out to a sponsor. No matter what method or plan you choose, keeping at it daily and putting your all into it is the key.
Regarding your question about the guilt and shame, there really is no way to just make it go away - but time will help. Staying sober so those kinds of things never happen again is the best thing you can do today.