R.E.A.L.L.Y don't want to relapse.

Hey guys! I'm fighting a serious head battle right now. I've been making progress and I'm super stoked about it. I went 27 days which was really good bc I couldn't even go a week before. (That's no pmo). Here's the thing. In my head there's a voice telling me "just make it to 30. Then you can pmo all you want for a couple of days!". This really freaks me out. I know I can make it to 30 and beyond. But I really want to avoid this kind of thinking. Any ideas on focus or activities I could do? I want to change. I feel like someone else is controlling my thoughts and that's not good. HELP!