Your life is representative of your beliefs.
If you want to use the LOA to your full advantage, you will then need to know what your belief systems are.
If you do not take the time to first truly understand what motivates you, you may unknowingly frustrate yourself while trying to deliberately manifest your desires.
If you want love, yet do not subconsciously believe in your worth, you may blame the LOA for letting you down, although the truth would be, the LOA was in fact working perfectly. You always bring about what you think about...good or bad...