Positive and negative emotions cannot occupy the mind at the same time. One or the other must dominate. It is your responsibility to make sure that positive emotions constitute the dominating influence of your mind. Here the law of HABIT will come to your aid. Form the habit of applying and using the positive emotions! Eventually, they will dominate your mind so completely, that the negatives cannot enter it.
The Prosperity Bible: The Greatest Writings of All Time on the Secrets to Wealth and Prosperity (ed. Penguin, 2007) - ISBN: 9781101097632