The most important thing in life is to maintain and nurture any relationship and especially love relationships are the very delicate ones. So, it is necessary to create a natural balance in it. There should always be some values that can keep the relationships going on, and when the balance or values are broken the relationship gets dissolved.
But one should not be disheartened and always try the level best to get his/her ex back. Facts say that almost 90 % of the broken relationships can be reversed, if the right steps are taken.
Think about the reason: Always try to understand the reason why your ex broke up with you. And for this admit your faults and mistakes, but look upon your positive qualities also. And he/she might have also been missing your positive qualities, so try to mend your faults and maintain your good qualities.
Take up action to become more valuable: After evaluating your negative and positive points, do some actions to create more value for yourself. Like if you have some negative aspects in your personalities then try to remove them, like you can join a gym etc. to improve your body tone or look more attractive than before. You can also add up your educational qualifications so that your ex would value you or respect you more. May be the reason was the incompatible match based on your educational or mental capabilities.
Open the communication with your ex: Though it may be very hurting to you, but do not close all the avenues to talk to your ex, otherwise you would not be able to communicate with your ex. Do not over indulge yourself, like sending sms, emails or calling every now and then, as this would eventually irritate him/her. But you can send few messages or emails in a week, so that your ex would also get the signal that there is a way back also.
Give some time and space to your ex: If you have managed to have a meeting with your ex then do not show over-enthusiasm, this will lower down your value. Try to behave in a balanced way and let your ex should take initiative regarding solving the earlier matters. And do not give your decision instantly, but take some time and tell your ex that both of you should rethink over the matter, before moving on together again.
So, these are some of the things that should be taken as a challenge, with keeping hope and confidence in yourself and then definitely your ex will come back to you.