I remember this obsession!! I had it many years ago! Knowing that it is OCD, we can break it down as such. The obsession - fear - is that you're lying. Right now your OCD is making you latch onto this particular theme with an irrational fear. That means, basically, that you're TOO afraid of lying - your brain is exaggerating the consequences (e.g., going to hell or something) AND it's exaggerating what a lie is, because you're so afraid of it. So it's making you second-guess every conversation, every word, etc. The compulsion - what you feel you have to do in order to relieve your anxiety - is running through conversations in your head over and over (if you do that), and going back and "making it right" with others. So basically, that's what you have to say no to right now. No matter how urgently your brain is telling you to go back and confess to someone, if it feels like OCD, then you have to refuse to do it. Of course, the next question your brain brings up is, "How will I know if it's OCD?" Well - you won't. And you have to teach your brain to be OK with that. You are not God, and you can't be perfect. You do the best you can within REASONABLE limits, then let it rest. Of course, your OCD will not let you do this at first. It will keep bugging you to perform your compulsions. But your job is to resist it, even if it feels like you're resisting your conscience. If it's your "real" conscience, you'll feel much more certainty about going back and "making it right" with someone, and it will be in a sound-mind type of way, not a fearful and questioning one. So for now, if it feels obsessive, immediately treat it as OCD. Trust that God is merciful and will give you grace if you do happen to mess up. Do the non-obsessive thing, treat your OCD as OCD, and trust God for the rest. You can do this!
