Jesus said in Matthew 12:34-35 that if you store evil in your heart (your thought life), then evil will come out of your mouth:

 “Brood of vipers! How can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks. A good man out of the good treasure of his heart brings forth good things, and an evil man out of the evil treasure brings forth evil things.”

People speak what their heart sees. When your vision is wrong, your words will be wrong. To change your words, you must change your vision. To change your vision, you must change your thoughts.

Psalm 1:1-3 gives us God’s unfailing system for success. 

Blessed is the man

Who walks not in the counsel of the ungodly,

    Nor stands in the path of sinners,

    Nor sits in the seat of the scornful;

But his delight is in the law of the Lord,

    And in His law he meditates day and night.

He shall be like a tree

    Planted by the rivers of water,

    That brings forth its fruit in its season,

    Whose leaf also shall not wither;

And whatever he does shall prosper.

Step one is to reject and remove ungodly associations and thoughts from our life. Step two is to allow God’s Word to dominate your conscious thought life day and night. This means you are to continually fill your thought life with God’s Word.

The result of these two steps is that a new image and vision will come to your life and bring with it prosperity and success. The process is very clear. If you will allow the Word of God to dominate your thinking, God will allow continual success to dominate your life. The key is meditation.