You can’t have a perfect memory for the rest of your life. The reason I am saying is because you’ll remember the painful memories as well. Just try to remember the happy times you’ve had in your life. I don’t get that some people need to remember the negatives in order not to do bad things again. You can think about not doing bad things again, and still not remember the painful memories. The bad stuff in your life isn’t going to make you positive. In fact it makes you arrogant and a struggling person. The struggles are the most you’ll remember. This isn’t the way to change your life. Try to build positive new memories you’ll remember for the rest of your life. Try to leave the painful pasts behind. Live for today. It takes day by day to forget all those awful past events you have bunched up in your mind.