Your ex has every right to reject all the moves that you make while trying to convince him/her to get back together with you after a breakup.
  But that should not stop you from trying out some magically effective psychological tricks that can guide your indignant ex back right into your waiting arms.
  Stop all contact immediately.
After days, weeks or months of pestering your ex with no results, change your strategy and stop all contact immediately.
This move will throw your ex off-balance and after some initial relief, he/she might suddenly get concerned as to whether you were all right.
You will now have managed to change his/her feelings about you even while avoiding him/her.
  Turn from sad to happy.
Ditch that depressed attitude in favor of one filled with happiness and optimism, even if is just from outside.
Let your ex observe that you have left the past behind and are now looking towards a bright future, even if it means going on without him/her.
Get a new job along with a new hobby.
Party hard and work out harder to improve yourself from all possible angles.
Seeds of doubt will now germinate in your ex's mind as to whether you actually plan to make the breakup permanent.
  Start dating again.
Your breakup would indicate that you are now free to date anyone that you like.
Even as your ex is now enveloped in clouds of doubt, enter the dating ring and start dating a few suitors to drive home your point.
Let your indignant ex now observe that you are still attractive enough to bowl other suitors over.
This will deflate his/her oversized ego and get him/her thinking of how to pry you loose from potential suitors.
  Give your ex a propose-or-lose choice.
Even as your ex is contemplating ways to win you back, get the message across through common friends that although you still have deep feelings for your ex, you would not have any choice but to move on in life if your ex does not ask for your hand again within a week.
This will mentally kick your ex into action and you could just find your ex crouching on one knee at your doorstep.