I understand that "slipping" feeling. Never makes us feel good and never solves anything. Just like drinking is to an alcoholic...seems like a good idea at the time as they say.
My lowest point is when I went to verify that my XAB was really at a restaurant with a guy, when I pulled in he was walking out with the guy and he saw me. I've never done that in my life. Felt cheap immature and discusted with my self.
When I get that feeling to "verify" I take some deep breathes and do something to distract my self. Like take a bath, open mail, read a magazine, call a friend, stick a fork in my eye (just kidding).