Most people indulge in some form of daydreaming. There is no harm in this so long as such daydreams are positive and constructive in character. You are always thinking, when you are not asleep, and you know that it is in the selection of your thought that your destiny lies.
Do not let your daydreams take the form of an escape from actuality. A daydream is an evasion when it consists in fantasying something pleasant that nevertheless you believe could never happen. Such a daydream debilitates the whole mentality.
Some people daydream about all sorts of unpleasant things. They rehearse imaginary quarrels, imaginary injustices, accidents, and misfortunes, and because they do believe that such things could happen, and because thought is creative, they actually bring them upon themselves.
See to it that your daydreams are concerned with such happenings as you would really like to find in your life. Know that anything good is possible; remember the creative power of thought; and your daydreams will come true.
A double-minded man is unstable in all his ways (James 1:8).
While we can’t daydream ourselves to success, we must visualize the future we desire. We must also back those visualizations with the reality of faith, righteousness and hard work. God has seen and planned our best future for us. It is our job to make it so in our dreams, thoughts, words and deeds.
Sweet dreams,
Z gardener
Good Morning Garden 
You are right indeed. In short we get what we see. In order to pave the way for our desires to become manifest we must at first be able to see ourselves living our dream. And of course we do this through visualisation.