This is something I can call a “newbie’s cliché”, many a times I get to hear this complain. The problem I see here is, you are learning law of attraction to just satisfy your material desire, are you not loosing or missing the bigger picture?
May be you want to use learn law of Attraction just to get your ex back, and you are still not successful, point is, you are seeing law of attraction from one the point of view of your problems and you miss to understand how beautifully this law works.
Come out of the shell of material desires first learn and appreciate the workings of Law of Attraction in your life, rest all will follow, I believe.
Applying Law of attraction, just to get a Car, house, money, ex back is just limited to this, but, understanding the Law and its beauty, will last with you, in all you desire and want. See the bigger picture, rest all will follow.