Our minds are made up of two halves- our conscious mind and our subconscious mind. The conscious mind controls our physical actions, and also analyzes the information it receives from what we see, hear, touch, feel and smell. The conscious mind will then analyze and relay this information to the subconscious mind.
The subconscious mind controls the workings of the body outside our conscious control, such as digestion and blood circulation. It is the part of our mind that responds to our thought vibrations and works with the universe to manifest what it is we are focusing on using the law of attraction.
However, the subconscious mind is unable to analyze the information it receives and relies on the conscious mind to create its reality. This means that if your conscious mind is giving out strong thoughts of poverty, this will be impressed onto the subconscious mind, which will instruct the universe to manifest more of what you are focusing on- namely more poverty. The subconscious mind has no way of knowing or judging that this is negative and not what you truly want.
If you do not think that you are worthy of success, then your conscious mind is giving the instruction to your subconscious mind that you are not worthy, and it will manifest appropriate behaviors designed to keep success away. On the other hand, if your conscious mind tells your subconscious mind that you have a new car, and your focus is on the car, as long as you belief that it will come to you and that you deserve to have it, your subconscious mind will find ways of bringing the car into your life and making it a part of your reality.
If your conscious mind gives your subconscious mind an order, it has no choice but to obey. If you keep your thoughts and feelings positive and be specific in what you want, your subconscious mind will manifest it for you through the law of attraction.
For a more indepth look into the subconscious mind check out 9 facts you should know about the subconscious mind at inlpcenter.org.