To weaken the other person's inherent impression of you and strengthen the initial impression, I believe that the other person must have put up with you for a long time before breaking up with you. In the process of being together, he accumulated a lot of negative emotions, disappointment, and let go when he was fed up. You are more or less entangled with each other, so he has a strong resistance to you and a negative evaluation of you, which is also the biggest difficulty to recover. A large part of the reason for breaking up is that in the process of getting along, your behavior and your characteristics make his initial impression of you very different and disappoint his expectations. Over time, the other party has the idea of wanting to escape.
You will disappear for a few days, and nothing will happen. Don't let the other person know anything about you. Then start to enter the circle of friends, not to let you send a sad copy, but to effectively feedback our current positive state, pass on the change, take out a piece of paper, write down the points that attracted you to the other party on the left, and write down the points that disappointed the other party on the right, and foster strengths and avoid weaknesses. For example, the other party likes your gentleness and thoughtfulness at first, but they are always impatient when they are together. I was fierce at that time. You can post some photos of your interaction with small animals and children in your circle of friends. Of course, you should pay a little attention to your clothes. This is the most intuitive way to convey change and let the other person feel that you are really different. Of course, it's fresh, or you can just pat the bust or back, keep the mystery hidden, give the other person a reverie, arouse the other person's curiosity, unconsciously reduce his inherent impression of you, and generate associations.
If he is abusing you. I find that you are still the same as before. Why did he turn around? Your ex may praise you, comment on you and chat with you, but these are actually for testing. All you have to do is respond politely. If he says anything, how long will it take you to answer? If he stops talking, you just end the chat and don't strengthen the interaction. Attitude is to show a look of indifference, not taking the initiative or rejecting pulling with him. Through your response, you will show the advantages you wrote on that piece of paper from time to time, strengthen the initial impression, and make him begin to doubt your original kindness.