I constantly deal also with illogical or disproportionate guilt. Sometimes it's a vague feeling that blankets my entire being for no apparent reason and other times it has a very specific source and is of high intensity. As someone else already suggested, I find it helps to have a non-judgmental confidant (or a few) who you can trust to more objectively review the circumstances of your guilty feelings with you and then can reassure you that you should not feel guilty, as likely will be the case. I would never have survived this long in my mind without my mother there to reassure me that I really am not a bad person and that I did nothing wrong. She fields many distraught phone calls from me each week, sometimes daily. It's probably better to have a few good friends to alternate between so it is not too taxing on the people who support you. While its not a cure, I do find it often helps, even if it is only temporarily till the next trigger... Good luck!