We've heard from a few people recently, who've been concerned because when they've used FasterEFT to change a bad memory to a positive one, the old bad memory seems to come back.
The concern has been "How can I be sure now that when I change a memory, it really changed, and the old one is not still there?"
If you play the new memory regularly, and clean it up if there are any doubts, it will usually stick. This is why we recommend practicing the new memories at least 12 times a day for the first week. It doesn't need to take any extra time in your day - it can be while doing other things, like brushing your teeth, driving, or washing dishes. ;)
The more you think about something (like the new memory), the more you're using that neural network; and the more you use it, the more those neural connections become "wired". When you stop using particular neural connections, they start to lose the connection. This is how the brain is "rewired" when we learn new information and cease to think about the old information. The more you practice the new memory, the more established the new neural network becomes. :)
Having said that, as you practice the new memory, if you find the old memory, or aspects from the old memory, popping up, that just means there are still some of the old connections - and that's okay, you can just notice them, and then tap, let them go, and change them. And then continue to practice the new memory. :)
Think of it as a weed in the garden. You've removed the weed, and you think you've removed the root, and you've planted flowers. And you're watering the flowers each day. And then you notice a bit of the weed growing between the flowers. You wouldn't think that the flowers aren't real, and the weed has come back and there's nothing you can do about it; you would just realise that you hadn't quite got all of the weed out, and there must have been a bit left, that has grown, and then you would just pull those bits out, and continue to take care of the flowers. :)
Treat the old memory as a weed you've removed - you don't want to replant it by practicing it, but you also know that once you've removed it and planted flowers in its place, it can't magically replant itself. If it appears to come back - it's just bits of the root that were left behind that have started to grow. Just calmly remove them. And then keep watering and appreciating the flowers (the new memory). When you see a weed, you could fear it, even though it can't hurt you, or you can just pull it out. ;) And your old memory has no more power over you than a weed would have. :)
Extra Resource: You may find this article useful as well - it gives a specific example of two ways of responding to an issue that appears to come back:
What if it Comes Back
Odille and Steve Remmert are specialists in subconscious reprogramming. Having significantly transformed their own lives by changing their subconscious programming, they're excited to be helping others do the same!