Thoughts are things. If you dwell on anything for a long time you will act and become like it.
Proverbs 23:7 says as a man thinks in his heart, so is he.
If you think negatively it will come out of your mouth and manifest in your life.
Philippians 4:8 Living Translation says 8 And now, brothers, as I close this letter, let me say this one more thing: Fix your thoughts on what is true and good and right. Think about things that are pure and lovely, and dwell on the fine, good things in others. Think about all you can praise God for and be glad about.
We can control what we let into our thought life.
I Corinthians 10:5 King James Version says 5 Casting down imaginations, and every high thing that exalt itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ.
We can erase negative or wrong thoughts by replacing them with the word of God.
Proverbs 4:20-22 King James Version says
20 My son, attend to my words; incline thine ear unto my sayings.
21 Let them not depart from thine eyes; keep them in the midst of thine heart.
22 For they are life unto those that find them, and health to all their flesh.
It is good to have pictures with scriptures on things you are believing God for around the house and at work. Discouragement will come and seeing the vision board can help keep faith alive to bring things into existence.
Visual brings the material.