"I Want My Ex Back" - Here Is What To Do..
Follow This Plan:

The first step is to follow a path of personal development. The best thing to do is to make yourself a better person so your ex will think it was a mistake to break up. You need to follow a series of planned steps to lead your ex to this conclusion.

Planning is the most important thing you can do

First, decide if you really do want this, then start on how to make your ex want you back. Some people decide to move on at this stage. It’s a good exercise anyway because it really makes you think about yourself deeply. The next weeks and months are going to involve self analysis, so it’s good practice.

Next, is something you shouldn’t do at this stage, you shouldn’t tell your ex you have changed. You shouldn’t talk to your ex at all at this stage. The old “it will be different this time” routine is too unbelievable. Of course people do change, but not that quickly. Real and meaningful change takes time. People can change for sure, but work is required and it is really more about displaying the results of the change and not just saying it.

Now, find out what to change. It is unlikely that any single thing led to the break-up and it is unlikely that any one partner was solely to blame. You will have to have a good critical look at yourself and be honest. Were you too needy, did you over-criticize, did you continually rate them against someone else? Did you neglect them, did you drink too much, did you let the relationship become stale and unexciting?

Change requires work

And then, work on changing it. When working on how to make your ex want you back,  the best way is to actually change and not just promise it. Learn to be tolerant of other opinions, give more compliments, cut down on the drink, be a bit more adventurous. When you meet your ex again you won't have to plead with them that you have changed they will be able to see it immediately. Then your ex will be thinking, maybe breaking up wasn't such a good idea.

There is a lot of psychology involved if, but don't think of it as "playing games". You are not trying to get one over on your ex, you are genuinely following a plan to get back together. The positive effects of the plan will work with each other, and multiply to really make you a better person. And this will accelerate your reunion.