Many people only appreciate the value of the persons in their lives after they have lost them.
This is why, for example, after a guy's girlfriend breaks up with him, his immediate reaction is to think of ways for him to reconcile with her and get back together again.
If you are in this same situation, here are some tips on how to get your ex back.

1. First is examine what really happened to your relationship and what caused it to fail.
   This is important because this will guide you in making concrete decisions later on.
   Once you have understood the cause of your breakup it is time to ask yourself whether you are willing to change to solve your problems or not.
   If you are not keen to changing your ways, then maybe you are not yet ready to reconcile.
   
2. Another answer to your concern on how to get your ex back is to prove to him or her that you are really worth having back.
   You must prove to him or her that what you have decided on are not just mere words but you are really decided on actually doing them.
   You can show this by really being a good person, someone who is responsible and someone who doesn't get involved in controversial things.
   
3. Try to recall the things that you did before that your ex liked about you.
   If it is your humor that your ex liked then show him or her your humor every chance you will get.
   If it is your physical appearance, then show it.
   Simply put, this means that you need to put again your best foot forward.
   If she liked those things then, she probably still likes them now.
   
4. Win over your ex's friends to your side.
   This may be a bit difficult but if you succeed in this, your change of getting your ex back will become big.
   
5. Be patient.
   Getting your ex back is something you cannot get overnight.
   Just persevere and you will surely get what you deserve.
   

How to get your ex back is not really very difficult.
If you follow the tips mentioned here, half your problem is already solved.
The rest of course will depend on her.