Almost everything you read online or in ebooks will tell you that you shouldn't contact your ex for 30 days. This is supposed to be effective because it decreases your chances of looking desperate.
But no contact for 30 days is useless if you're still the same person your ex left 30 days before. If you have used those 30 days to obsess about getting back together instead of making your personal and professional life explode, you will not be able to maintain the relationship you had with your ex.
Everything in life is about growth. Many will give you a promise in a box to get your ex back guaranteed. Some have great information, others don't. Some are just sugar pills and others are actually full of vitamins that will help you to actually grow in a way that help you have the skill to maintain a relationship.
If you are still the same beggar obsessed with feelings of loss because you were rejected then its time to put away the magic formulas and really begin to take the real road to get yourself back first. This is the only way you can influence someone - when you have exercised control over yourself.
Truthfully, many formulas tell you to work magic on your ex or to use mind control techniques but this is just foolish if you can't have self-control. How are you supposed to control someone if you can't even control your own emotions? How can you get someone back if you can't even get yourself together?
Do the right thing and you will succeed in getting what you want. Honestly make progress in your internal world and THIS will work like magic to increase your chances of getting your ex back.