Hebrews 11:3 (NKJV)
When I was in high school, I took several art classes where I learned to draw, paint, and sculpt things. When I wanted to do one of these things I would get the proper materials and then begin my work. If I was going to paint a picture, I would get a canvas, some brushes, and some paint. If I was going to create some sculpture I would get some clay, and possibly some tool to use to shape the clay. It would have been foolish of me to attempt to create a painting with some clay or to make a sculpture with some paint or drawing materials. To create the right thing I had to use the right materials.
In Hebrews 11:3 it tells us that God framed, which literally means to complete thoroughly, the worlds with His words. Through the words that He spoke, God created the world. In Genesis 1 we see the phrase "God said" repeatedly as God created the world and everything that was in it. In a similar way, the words that we speak will create the world we live in. If we talk about fear, failure, problems, and other negative things then it will be difficult to have a life that is free of those things. If, on the other hand, we talk about what God has said in His Word we will create a different type of world.
The Bible shows us over and over that our words are very important. The things we say will have an impact in our life, positively or negatively. The more we talk about something, the greater it will become in our life. We can talk about the natural situation we find ourselves in or we can look to what God has said in His Word and talk about that. We will never achieve the success we desire or fulfill the will of God for our lives if we do not speak the right kind of words. It is our choice as to what we talk about, and whatever choice we make, those words will create the kind of world we live in.