You misunderstand the law, my friend :) Wanting something, does not mean you will get it. In fact, that usually has the opposite effect. When a person wants something from a place of desperation, that is a negative thought/vibration/energy and so will only attract more negativity. This is why so many people are unhappy. This is why praying doesn't work for most people.

It's not about what you want, it's about what you ARE. You have to already be positive, it has to be your dominant way of thinking, for you to attract more of it. This is where most peple fail because it's hard to think positively and FEEL positive, when things are going badly.