What you need to do is look at this belief system and all of the factors that continue to support it and say, It’s too big of a job to change the entire thing. Instead, I’m going to start changing the thoughts that activate disallowing right here, right now. It doesn’t matter what you thought before, or for how long, or how many pressures you’re under to maintain your resistance. Instead, stop activating disallowing thoughts today, one thought at a time. You can do so by stating, I feel successful, I intend to feel the abundance that is here, now. Repeat these words, or create your arrangement of words, which continually inundate your thoughts during your waking hours, with a new belief of being successful and abundant. When you’ve activated these thoughts enough times, they’ll become your habitual way of thinking, and you will have taken the steps to eliminating your resistance to allowing.

Reference : The Power of Intention. Dr. Wayne W. Dyer.