Hi WL,
I have found that the best way to deal with the guilt about things that have happened is to address it directly. Apologize for what you've done and ask them to forgive your actions. You were not your actions. The fact that you feel guilty about things you've done is huge, it means you actually care about the people who have been affected. And knowing that may help you in your road to recovery. It takes a very brave person to apologize and try to make amends for things they've done. Sometimes getting forgiveness from someone lifts the weight of the guilt off your shoulders. Believe me, I've been there more times than I want to remember.