I’m so sorry to hear that. It must be very frustrating! I’ve had my ups and downs but B”H I have not bitten in the past 12 days! They still drive me crazy but I just try to ignore them.
As was mentioned a number of times, disposable gloves really help! If your embarrassed about wearing them, think that it is better all the embarrassments of this world then one second in front of Hashem! (HaTanya(?) Reb Amram Chassida)
Remember, Hashem doesn’t ask us to be perfect! All we need to do is try (and daven!). If we succeed or fail is not the main thing! A ???? falls, gets up and “tries, tries again!”
We are rooting for you!