There are many reasons, why you broke up, but it usually comes with increasing stress and fights in the relationship. So after breaking up, it is a good idea not to contact your ex for while to get emotionally distant from it.
There comes a phase, where you think, you might try again and work things out or doing couple therapy or something like that. You might even get sad and everything reminds you of your ex. If you want to get back to your ex, you will improve yourself in terms of appearance and behaviors, but if you don’t want to get to your ex back, here is my favorite way to get over the ex. Simply just find another girlfriend. In best case a better one then before. I’ve asked many couples, where they’ve met each other.
Here are there replies: in a tram, on a festival, through friends, in a bar, in a club etc. So there are many places, where you are able to find your significant other. To find a girlfriend as soon as possible you better to go out and actively look for her or even change the country to search like I did. Last but not least, speed dating is an efficient way to meet many ladies in a short time.
Here is another article, that might be interesting for you: How to avoid break ups